Barelement (very helpful)
Barailement (not helpful, looks pretty though)
Shellra (somewhat helpful)
Boost-MND (situationally somewhat helpful)
Divine Caress (somewhat helpful)
Blink (with /SCH, somewhat helpful)
Cure (prevents the K.O. status ailment)

I think the problem that many White Mages have is that Barailement spells are less effective then boosting all your stats (INT, MND, CHR) up +5 points. Sure, it might lower the time the ailment is on the target, but unless you're incapacitated (Petrified or dead) you are pretty much expected to remove ailments on party members as they are put on.