Protection from Undead

[Einan]

Why not just create a spell? Sanctuary might be modified to only work on Undead types. If you don't attack them, they don't attack you.

 

[Whimsical]

The ability to appear undead to undead was part of the wraithform spell back in 2nd ed.

 

[Kid Charlemagne]

The Eberron book has a feat called "Undead Empathy" that allows a PC to use Diplomacy on the undead...