AngelAsphodel
If you aren't happy with the descriptor, then maybe Keprn's Resilience, or Keprn's Fortitude would be better.
So far, I've accepted 'protection', though I do appreciate the other ideas you've brainstormed. There's a chance that, even if the form's name might not be changed, future named spells associated with it might be able to use some of these descriptors as inspiration. Bulwark is a good one and I can see myself using it in the future
PhoenixDragon:Then maybe Keprn's Bulwark would be better. A bulwark is defined as a defensive wall, and I think that it works better here than the other two I suggested.