Need to be safe from what is lurking about? Get a stone, any stone will work and take it into your projective hand(if you a right handed, probably your right, and vice versa) and close your eyes, visualizing your rock. It is hard, unbreaking, solid, and safe. You are the stone now though, and you are unbreaking, hard, solid, and safe. Once you've done this, open your eyes and toss it at the trunk of a tree. It is done.
This does not last forever. It is brief safety and may be repeated whenever you feel it is necessary.