Sasaki mentioned what I always do when I'm trekking. Carry some money, and old ID and give them the mugger so that he has the feeling that he won. He walks away with some euros and I unharmed.

I always carry a multitool or a light knife, but it is clearly ment for work. I don't think I would be able to stab somebody, since I never faced physical violence after I became large and quite trained and don't know how I would react to it.