Lie on the ground and feign death.

From Create Your Own Story

You go limp and fall to the floor, eyes closed, breath held. The black bear approaches you and snarls angrily and you resist the urge to sprint away as fast as you can. The black bear roars and clamps its jaw around your skull and crushes it in one single bite.

Looks like you didn't learn that feigning death doesn't work on black bears. Better luck next time!