well your not at fault. florida is a no fault state so im assuming your gonna have to call your own insurance agency first assuming you have a car with insurance on it. if not call his. report what happend and thier gonna send someone to look at the damages. most times they make you pay the deductable but if you know a guy who runs a shop he can up the price of the damages that will take care of the deductable. you also need to go to the hospital and get the knee checked out. go with your own insurance info cuz the insurance companies are going to be paying for it and then the other guys insurance has to pay them back.