Like Serinanth said, what you dream is only for you. You have to figure out what it means. If it helps here are some interpretations I dug up out of a book:

Accident-To be involved in an accident on the road or to see one, shows a great need of discretion in your affairs; you are trusting others too much.

Prophet (I guess this would be your friend since he is "fortelling" your death)- An unfavorable dream; you will be misled by a false statement.

Like I said, see if these help, don't take them literally.