first collect the police report, then go to the other party's insurance(police will inform you)with your car. if your car is new(less than 1 year) then you can fix it in the nissan showroom or else they will give you some choices for some garrages in ind area, take one of the following if they are on their list
proton service centre(doha motors)-wait time is less.
xpress garrage-good service
tayseer- but wait time is too long