[Pathfinder/3.5] Naturally Resistant to Possession?

[kevin video]

Are there any PC playable races that are naturally resistant to possession? Barring that, is there a way to get constant Protection from Evil? Looking to do up a one-shot where the players are the only ones who weren't possessed and body snatched by demons or devils.

[Halinn]

Custom magic items for Pro: Evil, or one of the savage species races with Magic Circle against Evil. DMM Persist magic circles, perhaps.

[Maat Mons]

Ghostwalk has the protection from possession spell, which is more limited than protection from evil but lasts longer.  The guidelines suggest a price of 3,000 gp for a continuous item of that. 

Ghostwalk also has dracanite helm, which provides a +2 deflection bonus and continuous protection from possession for 12,000 gp.  It's actually 500 gp cheaper than you'd expect from the guidelines. 

[Agita]

There's portable shrines as equipment in Pathfinder. If a party member can carry one, you can put a Hallow on it for a permanent Magic Circle effect with a radius of forty feet.

[veekie]

They're bloody heavy though, but I suppose if you got a wagon or a PC strong enough to wear a miniature temple on a backpack...

[Agita]

They're bloody heavy though, but I suppose if you got a wagon or a PC strong enough to wear a miniature temple on a backpack...

Only 40 pounds, actually. A Str-primary tank should be able to cart one around.