Light grease on the bolt and locking lugs. Also a small amount on the cocking cam at the rear of the body.
The firing pin and interior of the bolt should only receive dry lube. I prefer a moly-based dry lube that won't congeal in cold weather or pick up grit.
Using any oil inside the bolt can cause it to run down the firing pin, onto the primers, and kill them. WD40 is known for doing that. (I'm proud to say that I don't own any WD40.) I don't even like it on the exterior of guns because it gets very gummy with time.