First you need to retain an attorney to represent you in the lawsuit. This lawyer need to contact plaintiff's counsel regarding your representation and the need to tender your defense to the presumed errors and omissions insurance carrier for your former employer that was in effect when you were an employee and when the plaintiff was allegedly damaged.Hopefully there is insurance coverage in place and if so, most likely your willl be assigned defense counsel through this insurance carrier to defend and indemnify you concerning the claims against you in the lawsuit at no cost to you. The fees that are charged by your private attorney initially retained might be reimbursed by the insurance carrier if there is a policy in effect and coverage for the claims.Contact an attorney right away to assist you.Good luck.