I was very lucky to get away with this today, I can count my lucky stars.
I got doored this morning - when I saw the car door opening on the driver's side it was like some weird slow-motion and I knew what was going to happen next, but could do nothing about it. Fortunately, only the edge of the door got me and now I have a grazed forearm & I managed to stay upright (if he opened the door any quicker, I'd probably be in A&E).
I slowed down and stopped, looked back at the driver who asked if I was OK. I wasn't angry, I didn't see any point being angry. I said "Be more careful next time when you get out of your car. Yes, I'm OK".
I left it at that, he seemed decent enough, just a dopey driver on a Monday morning.