Since Cagnazzo is weak to Lightning and Ice, and you have two very powerful magic users in your party, this fight should be a cinch. Golbez holds all them now. A nice piece for Rosa, and a must have for Rydia but you should already have found one Tiara in Mist. This cave leads to the edge of the Tower of Babil. This will ensure that at least most of your party will survive each round.
nest...