you will never need to cast protect on yourself in a party. if you are finding that you do, something is wrong.
These three are always on my bar: Stoneskin, Provoke, Cure
These are the situations I use other stuff:
- Sacred Prism: When I can aoe cure/stoneskin others, like in Ifrit or Moogle (I guess, haven't done that in forever)
- Bloodbath: When I am purely tanking 1 mob and I can get mileage out of this with SW/Goring Blade.
- Raise: almost never have this equipped except when we are working on getting strategies down. Once something is on 'farm status', this spell becomes a wasted slot to equip. You might as well use expectorant/tonic since you can use those in battle.
Seriously though, drop Protect. Swap SP/BB/Raise as needed