Which Gal 2:7 is correct, OF or TO ?, page-95

Gal 2:7 - some Bibles write :-
Peter - gospel OF uncircumcision, Paul - gospel OF circumcision.
others write :-
Peter - gospel TO uncircumcision, Paul - gospel TO circumcision.
Do you see a difference ?
..
Peters "gospel" ? Acts 2:38 "...Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins.."
Pauls "gospel" is 1 Cor 15:1-4 - " I declare unto you the gospel ... By which also ye are saved "
Do you see any difference ?
..
Your thoughts on those 3 verses.