I remember there being subtitles so it must have been a English sub. I'll try to give an as explicit description of the moments that I remember; starting with the scenes that I remember the most.
A little girl is on top of a castle facing a terrified old woman/witch who faces her. The girl then either summons a dragon out of nowhere or turns into a dragon herself. (either way there's a dragon.) The dragon sets fire to the old woman/witch. The old woman/dies (she might have also fallen off the castle in the process of dying). *I'm very sure this must have been somewhere at the end of the movie*
A boy is in either a cathedral or castle (something of the sort.) He see's a man whilst making sure the man does not see him and stabs him (either at the man's back or the man turns in time for the boy to stab him in the stomach.) The wounded man then shouts something at the boy as he runs away.
A boy and girl travelling in a desert