He only killed me once, which is about 14 times less than
Cid, who either pummelled me into the ground or used Doom once his health got too low.
The only realistic way to beat him is to stagger him and use a Commando with the Launch skill to keep him in the air.
I tend to use Lightning (Ravager and Commando with Medic for emergencies), Fang (Commando and Sentinel) and Vanille (Ravager and Medic).
Lightning is by far my strongest character with moderate magic skills, but Fang has the highest HP and decent strength, so I control her as it's game over if your character dies.
Vanille is a better mage type character than Hope as she has good magic skills and higher HP (Hope has the lowest HP overall), and I don't really bother with Saboteur or Synergist roles.
The only enemy I have trouble with at the moment is the King Behemoth as they transform and regain their health as well as getting a more powerful attack
