He was taken prisoner by the Goa'uld and taken to Chulak. When SG-1 was also captured, they helped him escape and he helped fight off the Jaffa at the Stargate. He traveled to Stargate Command and presumably returned to his planet from there.
While engaging in a battle against a Jaffa Serpent Guard, the unnamed man strangled a Serpent Guard to death with the Goa'uld itself eventually possessing Major Charles Kawalsky. (SG1: "Children of the Gods")