Pialat won the Palme d'or[?] at the Cannes Film Festival in 1987 for Sous le soleil de Satan[?] (Under the Sun of Satan).
... is a compound of "mat" (me) and "stha" (standing, staying at) and means "they are in me". "-aham" (I) in the second line is nominative. na caaham = "...and not ...