That is an easy fight. Do not have haste? Make sure you power up or whatever by using hope or sazh as your Synergist at the start of battle then have Diversity with vanille as medic, hope as ravenger and light as commando. Should be easy as. Or you are too weak and need to train.
Just did this, using the Haste jewel thing before the battle. Battle was pretty easy, god i feel like such an idiot.