It happened around 1:22 a.m. in the 14500 block of Marshall Bridge Lane, according to the sheriff's office.
The report said the victim left his car, and then was approached by two armed men. They took his cell phone and cash and fled in a vehicle that was parked at the front of the subdivision.
The suspects were wearing hooded sweatshirts and dark pants. The vehicle was a dark color.
If you have any information, please call the Fort Bend County Crime Stoppers at (281) 342-TIPS.