No, luckily I have never been attacked. I once had a gun pointed at me though. I used to be a long distance runner and one day while doing a workout run in a neighborhod a car pulled along side me and the dude pointed a gun at me and said "Get in." Well, I knew I wasn't getting in so I said "Fuck you" and quickly turned into a yard and ran towards a house shouting. While running I fully expected to be shot in the back, or at least hear a shot fired. All I heard was the car speeding away and then the police were called and a description was given. They never found him.
FYI- NEVER leave willingly with anyone. Run, fight like a wild animal- whatever you have to do. Sure they can kill you right there- but it beats being taken somewhere, being tortured (perhaps for days- weeks- months) then killed. FACT.