Call the police on 999 (from anywhere in the UAE). Inform them about the accident, mention your location and wait for their instructions. Remember, no traffic incident in the UAE can go unreported.
If it is a minor accident and no one is hurt, you can move your car to the shoulder lane to avoid blocking traffic. You should wait for the police at a minimum distance of 15 metres away from your car.
If you or anybody involved in the accident sustains injuries, it is best to leave all vehicles exactly where they are, and wait for an ambulance to arrive.