Fopr Greater Sphere, you just need High MDef for Ultima, and Protect for Hydraulic Press (which does damage equal to your HP if it hits, 1/2 if Protect is set up). Avoid all Elemental Magic.

Th'uban requires a little more effort. He attacks in a vicious cycle of attacks, so use this to your advantage.

Quote Originally Posted by Do do duh
First, it uses a normal attack, then Rainbow, which does heavy damage over an area, and causes Curse, Confusion, Sleep, and nulls the effects of Haste and Slow, and finally, it will use Convergence, which deals 99999 damage to one enemy.
For Condemn, which is a Physical attack that does damage to all three characters, raise your defense to reduce damage. It goes down quite fast.

Kill Species Creations for +Def and +HP and +MDef Spheres.
Tanket, Juggernaut, and One-Eyes, respectively.

For all Creations, average stats above 125, and at least three Celestial Weapons are recommended. Mastery of Sphere Grid abilites is almost completely required for the normal player, and for those who actually play video games with controllers.