Both teams had already qualified for the knockout phaze after winning their previous games and faced off to determine the group winner, the-afc.com reported.
Mes Sungun wasted no time in testing Beirut as Ali Asghar Hassanzadeh forced a save from Bank of Beirut goalkeeper Hussein Hamadani in the first minute.
The Iranians employed a high-pressing game with quick passes which opened up their opponents but the Beirut side was well-organized and fought back with counters whenever found space.
Mes found the net in the ninth minute through Morteza Ezzati, who stuck out his right boot to direct Abolqasem Orouji’s cross from the right past the keeper.
Mes Sungun then doubled its lead through Farhad Hakim, who burst down the left and fired his powerful strike into the roof of the net to give the Iranians a 2-0 lead at halftime.
Ezzati then doubled his tally in the 30th minute following Hossein Tayyebi’s cross from the left to give his team a comfortable 3-0 advantage.
Iranian international Mehdi Javid, however, pulled one back for Beirut in the 31st minute to give Beirut a lifeline.
Beirut pushed further and was almost rewarded with its second following a counter but Javid could not convert from close range.
"This was one of the best games we had. Both teams played aggressively and technically it was very good as well. Our main target was having a stress-free game without picking any cards. I believe we have achieved what we had in our minds,” Mes Sungun’s head coach Hamid Bigham said after the match.