ok, I take it you are talking about FFX and not FFX-2. Like Elfangor said, you can use her overdrive assuming you have her at a decent level. Also, equip you hardest hitter with thunderstrike. attack away. Otherwise, get Yuna's overdrive and Ixions. Go in and use Ixion's overdrive. dismiss. Summon again with Yuna's Grand Summon, use over drive, then attack again. You can use the lightening on yourself to heal yourself. If you do die, bring in Ifrit and attack like crazy. you can use fire to heal yourself accordingly. Other than that, attack like crazy...quick hit, etc.