Let's see Hades's attacks before battling him

To be on the safe side, you decide to only defend for now, as you usually do, to study your opponent's movements before you attack. So far, all Hades has done so far is throw fireballs at you and some flaming meteors. Even though you sometimes get hit by an unexpected fireball, you're still in pretty good shape, not needing to use a single Potion.

Now that you know how Hades attacks, what is your next move?

Stats:
HP: 89
MP: 100
SP: 100