How to kill the dragon in the moon

final-fantasy-4nintendo-ds

I'm trying to get all the pieces of the crystal armor in the dungeon in the moon, but there's a red dragon in a box that kills me with "Thermal Ray" that makes something like 2k of damage to my party.

Any advice on how fight it?

Best Answer

I found the solution. I have to cast slow and berserk on it, so that it can't use "thermal ray".

It was so obvious... How do I forgot?

Thank you again.