You were Cris' enemy but you were part of his group of friends by Mekky, Saad and his cousin Dinis. Everyone knew Arabic and Portuguese but you didn't, so they tried to make you learn it. Cris was annoyed.

Cris: "uh then- I'll help you speak Arabic if you say first "اجعلني لك"

Saad, Mekky and Dinis looked at him badly because they knew what that sentence meant.

(that means "make me yours")