Makes you resistant to transformation
Resist is the third level spell on the Heal Materia. It makes characters immune to all statuses including instant death, as well as locking any statuses the character has on at the time the spell is cast on them (except for Barrier, MBarrier, Reflect, Shield, Regen, and Peerless), and costs 120 MP to cast. Resist status can be removed with DeSpell spell or the White Wind Enemy Skill.
Resist does not protect against statuses gained from the handicap reels in the Battle Square. This can lead to a rather serious handicap, as once applied, the Resist status will prevent the player from removing the status with normal Esuna spells and healing items.
If the player casts Reflect on all enemies and all party members, and then applies Resist status on them all, and tries to cast a spell to a target, the game will freeze.
Mog knight's protection prevents 1 status ailment.
Mog Shield is an ability of the Mog Knight, learned for 300 AP from the Pearl Blade. It prevents a status ailment from affecting the target within a range of 4.
Moogle Shield is an ability of the Moogle Knight, learned for 200 AP from the Pearl Blade. It nullifies the next status ailment inflicted on the target within a range of 4.
Increase the ailment resistance of allies within range of you.