As much as I love FFVII, its translation wasn't 100% perfect, but most of the time it was the names of things that suffered rather than dialogue itself - even if there was a spelling or gramatical error, you could still understand what the characters were saying.
However there is a line in the game which, while I get it, just sounds wrong;
Cloud says this line to Reno when they are in Sector 5. The structure of what Cloud's saying sounds odd to me. It starts to make sense, but then it goes off somewhere...I don't know who you are but... you don't know me.