Well, I managed to break the stupid prism. Any idea how to fix it?

The switches in the Batlle Square room...If you push/pull them into the right order you will see "Temple Maintenence Mode" and activate it to repair the crystal. If you don't know how to get there, its via the magic staircase. I forget what to say to it though, sorry.

Thanks, I decided to revert back to a save and approach the event more carefully. I'm having a tough time with this section all together...