Exhibit 10.3

FIRST AMENDMENT TO CREDIT AGREEMENT

THIS FIRST AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) is entered into as
of August 5, 2010, between Amber Energy, LLC, a Louisiana limited liability
company, having its principal executive office and place of business at 9700
Richmond Avenue, Suite 124, Houston Texas 77042 (“Borrower”) and Macquarie Bank
Limited, a bank incorporated in accordance with the laws of Australia, with
offices at Level 15, No. 1 Martin Place, Sydney, New South Wales, 2000 Australia
(“Lender”). Capitalized terms used but not defined in this Amendment have the
meaning given them in the Credit Agreement (defined below).

Background

A.

Borrower and Lender have previously entered into an Amended and Restated Secured
Credit Agreement dated April 30, 2008 (as amended, restated, modified or
otherwise supplemented from time to time, the “Credit Agreement”), for the
purpose of making available to Borrower a senior secured term loan for the
purposes set forth in the Credit Agreement.

B.

Borrower and Lender desire to modify certain terms and conditions of the Credit
Agreement.

C.

Lender is willing to amend the Credit Agreement pursuant to the terms and
conditions of this Amendment.

Agreements

In consideration of the mutual covenants of Borrower and Lender set forth in
this Amendment and other good and valuable consideration, the receipt and
sufficiency of which are acknowledged by each of the parties, Borrower and
Lender agree as follows:

1.

Definitions.  Article I is amended as follows:

(a)

The definition of “Letter of Credit” is deleted in its entirety and replaced
with the following:

“Letter of Credit” means the HSBC Letter of Credit and any other letter of
credit issued or guaranteed by Lender or its Affiliates or for which Lender or
its Affiliates is required to make payment in support of such letter of credit.

(b)

The definition of “Maturity Date” is deleted in its entirety and replaced with
the following:

“Maturity Date” means the earlier of (a) March 20, 2011, or (b) the first date
on which the payment and performance of the Obligations is accelerated by Lender
as a result of the occurrence of one or more Events of Default.

(c)

The definition of “Obligations” is deleted in its entirety and replaced with the
following:

“Obligations” means and include all loans and advances (including the Term
Loan), debts, liabilities, obligations, covenants, duties and amounts owing or
to be owing by Borrower or any Affiliate of Borrower to Lender or any Affiliate
of Lender of any kind or nature, present or future, whether or not evidenced by
any note, guaranty, letter of credit or other instrument, arising directly or
indirectly, under this Agreement, the Term Note, the Security Documents, or
under any Loan Documents, the Guaranty, the RLE Loan Documents and all renewals,
extensions and/or rearrangements of any of the foregoing.  The term includes,
but is not limited to, all interest, reasonable charges, expenses, consultants’
and attorneys’ fees and any other sum chargeable to Borrower under this
Agreement, the Term Note, the Security Documents, or any of the Loan Documents.

(d)

The following definitions are added to Article 1 in alphabetical order:

“First Amendment” means the First Amendment to Credit Agreement between Borrower
and Lender dated August 5, 2010.

“Guaranty” means the Unconditional Guaranty dated August 5, 2010, granted by
Borrower to Lender in support of the obligations of Borrower’s affiliate,
Rampant Lion Energy, LLC, to Lender under the RLE Loan Documents.

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“HSBC Letter of Credit” means the Letter of Credit issued by HSBC Bank USA, N.A.
in the amount of Three Hundred Sixty-Five Thousand Dollars ($365,000) for the
benefit of RLI Insurance Company, as amended, restated or modified from time to
time.

“J&S/Ensminger Exploration Agreement” means that certain “Exploration and
Ratification and Joinder Agreement, Ensminger Project, St Mary’s Parish,
Louisiana” dated February 1, 2010, among Borrower, JOG, Petrodome Ensminger,
LLC, J&S 2008 Program, LLC, J&S 2010 Program, LLC, Ridgeline Exploration, LLC,
and J&S Oil and Gas, LLC, as amended, restated or modified from time to time.

“J&S Entities” means, collectively, J&S 2008 Program, LLC, J&S 2010 Program, LLC
and J&S Oil and Gas, LLC.

“JOG” means Jurasin Oil & Gas, Inc., a Louisiana corporation.

“Parent” means Radiant Oil & Gas, Inc.

“Payment Date” means the twentieth (20th) day of each month beginning August 20,
2010.

“Reserve Amount” shall have the meaning assignment to such term in Section
2.7(d).

“RLE Loan Documents” means the $25,000,000 Amended and Restated Senior First
Lien Secured Credit Agreement between Rampant Lion Energy, LLC and Macquarie
Bank Limited dated September 14, 2006, as amended, supplemented or modified from
time to time (the “RLE Credit Agreement”), as well as all “Loan Documents” as
defined therein.

2.

Amendments.

(a)

Section 2.6(a) of the Credit Agreement is amended by deleting the existing
Section 2.6(a) in its entirety and replacing it with the following:

(a)

Payments are due as follows:  

(i)

Except as otherwise provided in this Agreement, all outstanding principal and
accrued interest shall be due and payable on the Maturity Date.

(ii)

On each Payment Date, Borrower shall make monthly mandatory principal reduction
payments with respect to the Obligations (in addition to any other payments or
prepayments of principal and interest due under this Agreement) (A) in an amount
equal to One Hundred Thousand Dollars ($100,000) during the period beginning
August 20, 2010, and continuing through September 20, 2010, and (B) in an amount
equal to Two Hundred and Fifty Thousand Dollars ($250,000) during the period
beginning on September 21, 2010, and continuing through the earlier of repayment
of all the Obligations or the Maturity Date.  The payment set forth above in
this Section 2.6(a)(ii) shall be an aggregate payment combined with payment
under Section 2.6(a)(ii) of the RLE Credit Agreement, such that the total
payment under the RLE Credit Agreement and this Agreement equals the amount set
forth above in this Section 2.6(a)(ii).  Provided, however, Borrower shall be
entitled to a credit of any amounts received by Lender under Section 2.10
against any future payments due under this Section 2.6(a)(ii).

(b)

Article VI of the Credit Agreement is amended by adding the following new
 Section 2.6(c):

(c)

All payments shall be applied  (i) first to Obligations under the RLE Loan
Documents (for purposes of this Section 2.6(c) only, the definition of
“Obligations” in the RLE Loan Documents excludes the “Obligations” owning under
the Amber Loan Documents) in the following order (A) unpaid fees and Related
Costs, (B) accrued interest, and (C) principal, then once all Obligations under
the RLE Loan Documents are paid to Lender in full, then (ii) second to
Obligations under this Agreement in the following order:  (A) unpaid fees and
Related Costs, (B) accrued interest, and (C) principal.

(c)

Section 2.7 of the Credit Agreement is amended by adding the following new
subsections (d) and (e):

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(d)

As of July 27, 2010, the total amount of cash collateral in the Project Account
is One Hundred Eighteen Thousand Four Hundred Thirty-One Dollars and
Seventy-Eight Cents ($118,431.78) (the “Reserve Amount”).  Borrower agrees and
acknowledges that the Reserve Amount will continue to be held in the Project
Account and may be used at Lender’s sole discretion to pay Related Costs and to
fund capital costs proposed by Borrower and approved in writing by Lender in
connection with the development of the Properties.  

(e)

Subject to Section 2.7(c), but notwithstanding any other term or provision of
this Section 2.7, on the Maturity Date and at any time a Default exists,
Borrower authorizes and directs Lender to apply any or all of the amounts then
credited to the Project Account in accordance with Section 2.6(c).  Whenever
Lender exercises its rights under this Section 2.7(e), if Borrower has not
previously provided to Lender satisfactory documentation of amounts to be
remitted to Borrower under Section 2.7(c), then Lender can make a good faith
estimate of such amounts subject to adjustment upon receipt of acceptable
documentation from Borrower.

(d)

Section 2.10 of the Credit Agreement is amended by deleting the existing Section
2.10 in its entirety and replacing it with the following:

Section 2.10  Mandatory Prepayment of the Term Loan.  

(a)  Borrower shall promptly pay to Lender one hundred percent (100%) of all net
proceeds from the sale of any Collateral (excluding sales of Hydrocarbons in the
ordinary course of business and the sale of Equipment pursuant to the Security
Agreement).  The preceding sentence will not be deemed to be a consent by Lender
to any sale.  Any prepayments shall have no effect on the Net Profits Overriding
Royalty Interest Conveyance granted to any Lender, or the rights of such Lender
with respect to the Net Profits Overriding Royalty Interest.  For the avoidance
of any doubt, proceeds from a farmout or similar agreement approved in writing
in advance by Lender shall not be subject to this Section 2.10(a).

(b)  Borrower shall irrevocably direct RLI Insurance Company to pay directly to
Lender any and all amounts held by RLI Insurance Company and due to Borrower
pursuant to that certain Indemnity Agreement between Borrower and RLI Insurance
Company related to the bond issued by RLI Insurance Company as set forth on
Schedule 6.24.  

(c)  Borrower shall promptly pay to Lender any cash amounts received as
insurance proceeds under any property or casualty insurance in relation to any
portion of the Collateral.

(d)  Borrower shall promptly pay to Lender an amount in cash equal to one-sixth
(1/6th) of the gross proceeds received by Borrower or any of its Affiliates as a
result of equity investments in Borrower or any of its Affiliates by any Person.
 For the avoidance of doubt, such payment of one-sixth (1/6th) of the gross
proceeds of any equity investment set forth above in this Section 2.10(d) shall
be calculated on an aggregate basis with the payment under Section 2.10(c) of
the RLE Credit Agreement, such that the aggregate total payment under the RLE
Credit Agreement and this Agreement equals no more than one-sixth (1/6th) of the
total gross proceeds of any equity investment.

(e)  Borrower shall promptly pay to Lender the gross proceeds, however arising,
from any well drilled on the Ensminger Prospect.

(f)  All amounts paid by Borrowers to Lender under this Section 2.10 will be
immediately applied as a prepayment of the Loans in accordance with Section
2.6(c).

(e)

Article VI of the Credit Agreement is amended by deleting the existing Section
6.25 in its entirety and replacing it with the following:

Section 6.25  Required Reductions to HSBC Letter of Credit.  Within five (5)
days of the effective date of the First Amendment, Borrowers will send a written
request to the J&S Entities requesting that the J&S Entities secure a
replacement letter of credit for that portion of the HSBC Letter of Credit that
is commensurate with the J&S Entities’ (including any successors in interest to
the J&S Entities) respective proportionate share of the Properties.  Borrowers
shall promptly deliver a copy of such written request to Lender.  Upon
compliance by the J&S Entities of the above request, the Borrowers shall then
immediately effect a reduction of the HSBC Letter of Credit in a like amount.

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(f)

Article VI of the Credit Agreement is amended by add the following new Section
6.26:

Section 6.26  Reconveyance of Interests by Lender.  In the event that all
amounts of accrued interest and principal outstanding under this Agreement are
repaid and all Obligations satisfied in full (including all Obligations arising
in respect of any of the RLE Loan Documents and any and all Letters of Credit,
but less the amount of Obligations converted subject to Section 6.26(b)) at any
time prior to March 15, 2011, Lender and it Affiliates, as applicable, shall
release all liens and security interests with respect to the Collateral and
reconvey all interests in Borrower's property including, without limitation,
that certain Net Profits Overriding Royalty Interest Conveyance dated April 30,
2008, and all membership interests of Borrower and RLE, as applicable.  

(g)

Article X of the Credit Agreement is amended by deleting the existing Section
10.1(a) and replacing it with the following:

(a)

Borrower fails to make any payment under this Agreement, the Term Note, any
Security Document or the Guaranty on the date due;

(h)

Article X of the Credit Agreement is amended by adding the following new
subsection (s) to Section 10.1:

(s)

the occurrence of a “default” or an “Event of Default” under any of the RLE Loan
Documents that continues beyond any applicable grace period;

3.

Limited Waiver of Defaults.  Lender hereby waives any Default or Event of
Default existing under any of the Loan Documents immediately prior to the
execution and delivery of this Amendment.  Notwithstanding the previous
sentence, however, NOTHING IN THIS AMENDMENT WILL BE CONSTRUED TO CONSTITUTE A
WAIVER BY LENDER OF ANY FUTURE DEFAULT OR EVENT OF DEFAULT BY BORROWER OR ANY
OTHER PERSON UNDER THE CREDIT AGREEMENT (AS AMENDED HEREBY) OR ANY OF THE OTHER
LOAN DOCUMENTS.  NOTHING HEREIN SHALL BE CONSTRUED TO WAIVE ANY RIGHTS OR
REMEDIES AVAILABLE TO LENDER OR ITS AFFILIATES PURSUANT TO THE CREDIT AGREEMENT,
OTHER LOAN DOCUMENTS, THE COMPANY AGREEMENT, OR BY OPERATION OF LAW OR OTHERWISE
(WHICH RIGHTS SHALL BE CUMULATIVE) AS A RESULT OF ANY FUTURE DEFAULT OR EVENT OF
DEFAULT.  

4.

Conversion of Debt.  Lender and Borrowers agree that Lender shall convert a
maximum aggregate of One Million Dollars ($1,000,000) of the Obligations to
Equity Interests in Parent which shall be converted in increments of Five
Hundred Thousand Dollars ($500,000) (the “Convertible Portion”) pursuant to
definitive and mutually acceptable documentation and, for each Convertible
Portion, upon the satisfaction of the following conditions:  (i) Borrower has
paid (and Lender has received) Five Hundred Thousand Dollars ($500,000) to
Lender pursuant to Section 2.6(a)(ii), and (ii) no Event of Default exists.
 Parent and Lender anticipate that the unit share price of the Parent Equity
Interests into which Lender will convert the Convertible Portion of the
Obligations will be Two Dollars ($2.00) per share (the “Conversion Price”).  The
Conversion Price assumes (a) Parent has complied with all obligations and
undertakings contemplated by Section 1.2 of the Exchange Agreement (attached
hereto as Exhibit A), including effecting the reverse split as described
therein, and (b) Parent is able to complete (i) an initial common equity
placement of One Million Five Hundred Thousand Dollars ($1,500,000) at a unit
share price of at least One Dollar and Twenty-Five Cents ($1.25) per share and
(ii) a follow-on convertible preferred placement of Twelve Million Dollars
($12,000,000) at a unit share price of at least Three Dollars ($3.00) per share.
 If the final unit share price on either of those offerings is less than the
amounts described in the prior sentence, then the Conversion Price will be
adjusted downward proportionately.

5.

The Obligations.  Borrower and each of the other Obligors agree and acknowledge
that, as of July 28, 2010 (a) the principal amount outstanding under the Term
Note is Three Million Nine Hundred Eighty-Four Thousand Six Hundred Eighty-Two
Dollars and Twenty-Two Cents ($3,984,682.22), (b) the amount of unpaid and
accrued interest on the Term Note is Three Hundred Sixty-One Thousand Two
Hundred Twenty-One Dollars and Thirty-Seven Cents ($361,221.37), and (b) no
defense or right of set off exists with respect to the enforceability of any of
the Obligations.

6.

Conditions to Effectiveness of This Amendment.  This Amendment will become
effective on the first day that each of the following conditions has been
satisfied:

(a)

Lender receives One Hundred Thousand Dollars ($100,000) in cash from Borrower
and/or RLE to be applied against the Obligations with the source of that cash
being the funds currently held in the RLE Project Account; and

(b)

Borrower and the other parties to each of the following documents (other than
Lender) have executed and delivered each of the following documents to Lender in
form and substance acceptable to Lender:

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(i)

this Amendment;

(ii)

a directive to insurer instructing that any and all insurance payments related
to the loss of control on the Ensminger Prospect well drilling attempt be paid
directly to the Project Account;

(iii)

Second Amendment to Act of Mortgage, Assignment of Production and As-Extracted
Collateral, Security Agreement and Financing Statement from Borrower in favor of
Lender;

(iv)

Omnibus Amendment from Borrower and JOG in favor of Lender;

(v)

the Guaranty;

(vi)

Subordination Agreement from JOG in favor of Lender;

(vii)

Subordination Agreement from Parent in favor of Lender;

(viii)

that certain Letter Agreement regarding Lender’s consent to the reorganization
of JOG between JOG, Borrower, Rampant Lion Energy, LLC and Lender;

(ix)

Certificate of the Managing Member of Borrower certifying as to Borrower’s
Charter Documents, authorizing resolutions and good standing;

(x)

Certificate of Secretary of JOG certifying as to JOG’s Charter Documents,
authorizing resolutions and good standing;

(xi)

a legal opinion of Borrower’s counsel with respect to the transactions
contemplated hereby, in form and substance satisfactory to Lender;

(xii)

a payment instruction letter executed by Borrower, JOG, RLE and John Thomas
Bridge & Opportunity Fund, LP II authorizing and directing Lender to apply all
amounts currently held in the RLE Project Account against the Obligations; and

(xiii)

any other document necessary or convenient in the opinion of Lender or its
counsel to give effect to the modifications to the Credit Agreement contemplated
by this Amendment.

7.

Reaffirmation of Representations and Warranties, Additional Representations and
Warranties.  Borrower, to induce Lenders to enter into this Amendment, hereby
reaffirm, as of the date hereof (except to the extent the previous
representations and warranties speak as to a certain date), their
representations and warranties contained in the Credit Agreement and in all
other documents executed pursuant thereto, and additionally represent and
warrant as follows:

(a)

The execution and delivery of this Amendment and the performance by Borrower of
their respective obligations under this Amendment are within the power of each
Borrower, have been duly authorized by all necessary company action, have
received all necessary governmental approvals (if any shall be required), and do
not and will not contravene or conflict with (i) any provision of law applicable
to Borrower or Parent, (ii) any of the respective Charter Documents of each
Borrower or Parent, or (iii) any agreement binding upon Borrower or Parent or
any of their respective assets.

(b)

This Amendment represents the legal, valid and binding obligations of Borrower
enforceable against them in accordance with its terms except as enforceability
may be limited by applicable Debtor Relief Laws and by general equitable
principles.

(c)

A true and complete copy of the Exchange Agreement is attached as Exhibit A
hereto.

8.

Ratification of Liens and Security Interests.  Borrower  hereby acknowledge and
ratify the existence and priority of the Liens granted by Borrower in favor of
Lender in and to the Collateral and represent, warrant and covenant that such
liens and security interests are valid, existing and in full force and effect.  

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9.

Miscellaneous.  The Credit Agreement, as amended hereby, supersedes all prior
agreements (written or oral) between Borrower and Lender with regard to the
subject matters hereof.  This Amendment is a Loan Document.  Except as affected
by this Amendment, the Loan Documents are unchanged and continue in full force
and effect.  However, in the event of any inconsistency between the terms of the
Credit Agreement as amended by this Amendment and any other Loan Document, the
terms of the Credit Agreement will control and the other document will be deemed
to be amended to conform to the terms of the Credit Agreement.  All references
to the Credit Agreement will refer to the Credit Agreement as amended by this
Amendment and any other amendments properly executed among the parties.
 Borrower and each of the other Obligors agree that all Loan Documents to which
they are a party (whether as an original signatory or by assumption of the
Obligations) remain in full force and effect and continue to evidence their
legal, valid and binding obligations enforceable in accordance with their terms
(as the same are affected by this Amendment or are amended in connection with
this Amendment).  Borrower releases Lender from any liability for actions or
failures to act in connection with the Loan Documents prior to the date of this
Amendment.  No course of dealing among Borrower and Lender or any other Person
will be deemed to have altered or amended the Credit Agreement or affected
either Borrower’s or Lender’s right to enforce the Credit Agreement as written.
 This Amendment will be binding upon and inure to the benefit of each of the
undersigned and their respective successors and permitted assigns.

10.

Form.  Each agreement, document, instrument or other writing to be furnished to
Lender under any provision of this instrument must be in form and substance
satisfactory to Lender and its counsel.

11.

Multiple Counterparts.  This Amendment may be executed in more than one
counterpart, each of which shall be deemed an original, and all of which
constitute, collectively, one instrument; but, in making proof of this
instrument, it shall not be necessary to produce or account for more than one
such counterpart.  It shall not be necessary for Borrower and Lender to execute
the same counterpart hereof so long as Borrower and Lender each execute a
counterpart hereof.  For purposes of this Amendment, an electronic copy of any
party’s signature to this Amendment shall be deemed an original signature.

12.

Governing Law.  This Amendment and all transactions provided for in this
Amendment will be governed by, interpreted and construed under and enforced
pursuant to the laws of the State of Texas, without regard to its conflicts of
laws provisions.

13.

FINAL AGREEMENT.  THE LOAN DOCUMENTS, AS AMENDED BY OR IN CONNECTION WITH THIS
AMENDMENT, REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS
OF THE PARTIES.  THERE ARE NO ORAL AGREEMENTS BETWEEN THE PARTIES.

[The next pages are the Signature Pages]

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IN WITNESS WHEREOF, the parties have executed this Amendment on the date first
set forth above.

BORROWER:

Amber Energy, LLC,

a Louisiana limited liability company

By:  Jurasin Oil & Gas, Inc.,
a Louisiana corporation, its Managing Member

By: /s/ John M. Jurasin                 

John M. Jurasin, President

OTHER OBLIGORS:

Rampant Lion Energy, LLC,

a Louisiana limited liability company

By: JURASIN OIL & GAS, INC.,

a Louisiana corporation, its Managing Member

By: /s/ John M. Jurasin                 

John M. Jurasin, President

Radiant Oil & Gas, Inc.,

a Nevada corporation

By: /s/ John M. Jurasin                 

Name:

____________________

Title:

____________________

Signature Page to First Amendment to Credit Agreement

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IN WITNESS WHEREOF, the parties have executed this Amendment on the date first
set forth above.

LENDER:

Macquarie Bank Limited,

a Bank incorporated in accordance with

the laws of Australia

By:

/s/ Jonathan Rourke    

Name:

Jonathan Rourke

Title:

Executive Director

By:

/s/ Karen Goepfert      

Name:

Karen Goepfert

Title:

Associate Director

Exhibits:

Exhibit A - Exchange Agreement

Signature Page to First Amendment to Credit Agreement

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