Mohammad Raouf led Iran with 18 points, while Muezbillah Saleh Balnnour from Libya scored 16 points.
The Iranian team is scheduled to meet Tunisia and Egypt in Pool B on Sunday and Monday, respectively.
The tournament has brought 16 teams together in Sofia, Bulgaria from August 24 to 31.
The eight teams that prevail in their first elimination matches will move forward to the quarterfinals, while the losers play the playoffs from ninth to 16th place, volleyballworld.com reported.