Try and build up your limit breaks so their ready to use at the start of the battle.
Use enemy skill Trine once its used on you.
Heal often, having white wind in the enemy skill is really useful here
If you have the latest weapon try a few rounds of attacks, you can get quite a few in before youll be attacked back in this battle.
Try equipping some HP plus, you can buy it from Cosmo Canyon

If you still cant beat him level up 1 or 2 levels, Good luck!