Ozur Nevenmore Battle

Scratch my last post; Ozur keeps moidering me. I figured out how to activate Laxis Power which makes them sustain a few more hits but that stupid Box of Curses spell keeps throwing me off if a direct hit doesn't. 
I have a feeling there's something similar I have to do that I'm missing here that doesn't rely on a specific spell or weapon. How do I stop Ozur from pulverizing my party?

I have a feeling there's something similar I have to do that I'm missing here that doesn't rely on a specific spell or weapon. How do I stop Ozur from pulverizing my party?