Just carry around something that you could defend yourself with for a week or so after release. I doubt anyone will target you and it's always best to try and run if you're facing a close range weapon like a knife, but carry something that could deter them long enough to run. If facing a gun, try and determine if it's real but I would give up your phone if facing severe harm like a gunshot wound. Never enter into a conflict unless you're sure to win e.g don't stab the guy unless it's life or death and you're sure he doesn't have a concealed gun...