Someone backed car into me who is at fault

Sitting at a red light the guy in front of me drifted back hit my car. He said it was my fault cuz I hit him from behind - but I wasn't even moving. We exchanged information but he did not give me his licence plate information. What should I do?

Sorry to hear you were in an accident. First, the only people who can determine fault in an accident are insurance companies through their insurance adjusters. I would contact your insurance company and advise them about the situation. They can best advise you and get in contact with the other driver. Hereis a guide to filing a claim, if need be.