I made a mistake, I did well with the third scroll. What I meant was the fourth scroll, the one after the room with the four orange eyes! When I cast this spell, not much seem to be happening...
Oh that makes more sense. The fourth scroll requires a bit of a leap of logic, since that spell doesn't do anything immediately useful for you. But it does contain a symbol that is very useful for you. If only there was a way to destroy that rock thats blocking your path...