The one with 2 rages and witch, right?
What I did was spam the ghost rage with Aquila's roundtrip move to keep it still. And if the witch used her swords, parry instantly with Osiris and then keep her still with the Aquila roundtrip move too and start using Arbiter on her.
Then hit the blood rage quickly with Eryx whenever it shows up.
Try and take out the wich first while also dealing equal damage to both rages so that the one left only takes a few hits to kill.
Also get the camera so that you can only see 2 enemies. This keep the 3rd from attacking most of the time.
Good luck! ^_^