This article is from the Final-Fantasy and other Square Soft Games FAQ, by firstname.lastname@example.org (Nick Zitzmann) with numerous contributions by others.
Use the same strategy as defined in the question above (5.5.4), but you
must make sure of one thing: You should have Billy in your party, and
unless you want to make this battle overwhelmingly difficult, Billy
**MUST** cast his all-healing spell every single turn he gets. (Citan
can do something similar, but it takes him two turns to get a version of
the spell off which affects the entire party. With the amount of damage
Id can create, you might not have those two turns.)