Just wait a minute, and stay out of sight. The mob that killed you will usually move away, unless you died on its spawn point.

For that matter, you gain the "no skill loss" buff for 10 minutes after you respawn after dying; just go punch it in the face and die again until one of you gives up.

Or maybe just snag your stuff and take off running; the "corpse run" buff you get from taking your items out of the death marker is a huge stamina reduction. If you ate some stamina food before running back naked, you should be able to sprint for a considerable distance after you pick your stuff back up.