Zob Ahan sealed top spot in AFC Champions League Group A after a 0-0 draw with Al Nassr at the Grand Hamad Stadium in Doha.
The match had been due to take place on May 21 in Karbala, Iraq, but was postponed and moved to an alternative venue for security reasons.
Both teams had already qualified for the round of 16 so it was hardly a surprise that the game was played at a pedestrian pace.
Al Nassr carved out the clearest opportunities, with Abdullah Al Khaibari and Fahad bin Jumayah testing goalkeeper Mohammad Bagher Sadeghi.
Zob Ahan will now face Al Ittihad in the first knock-out round, while Al Nassr take on Al Wahda.