Grace to you and peace from God our Father and the Lord Jesus Christ.
Though it may very well be that the words "grace" and "peace" reflect a Christian’s greeting in their Greek forms, it is not enough to say "greetings to you." The fact that grace and peace are to come "from God our Father and the Lord Jesus Christ" indicates Paul has something more in mind than the mere Christian greeting. A point of consideration is that the "peace" of this passage is not so much the peace of reconciliation with God as the normal blessings that come to a person who is a child of God.