In the prayer one says before sleeping according to judiasm, a person askes says that four different angels are gaurding him, one in front, one behind, and one on each side. Who are these angels?

Is it called the 'Bedtime Shema'?
If so the angels are called Gavriel, Michael, Refael, and Uriel

right you are. hey for a bonus, can you tell me who is in each direction?

Michael at the right,(guarding the children)Gabriel at the left, ( strength and courage) Uriel in front, (lighting the way through darkness and light) and Raphael behind, ( physical and emotional well-being)

right you are jenny. Good job.