Bad things happening to friends...
I'm fine if it's me that's in trouble, or could possibly be in trouble (I might get myself "ready" for anything if I'm forced to go through an alley, bad part of town, etc.

).
But when my friends (or someone else close to me) is somewhere by themselves?
That scares the
hell out of me.
Even if they're outside, but just walking to the nearby store and back, where the chances are slim-to-nil that anything
will actually happen to them... I still get worried sick until they're safe again.
Other than that though? Nothing, really...
Again, if it's just me that's in danger, I'm usually fine with that... So that rules out most of the other phobia's for me

...