I'm using Orlandeau and Milifina as my Holy DPS, Onion for Vessel, Tyro for Wall, and Vanille for heal.
Can't do shit if you get hit by the confuse right before the form change. What's really stupid is that even if your character that was confused was in burst mode, their attack reverts back to a normal attack instead of the holy attack command that your characters have active.
Also maybe I've been careful with games, but I've never felt this amount of RNG trash in a long time.
I would suggest you use fire bsb and RW fire osb. Wall isn't too big a deal here, mblink helps more. If you have no fire at all then I guess stick to holy. Perhaps consider RW Alphi and deploy tactics, it serious is a lot of damage with no risk.