Al Ahly maintained their unbeaten record in the CAF Champions League group stages despite dropping points against CR Belouizdad on Friday night.
Tau kept his spot in the line-up after netting in last week's draw with Young Africans, while Anthony Modese remains out while recovering from injury.
Belouizdad, meanwhile, were also aiming for a return to winnning ways after suffering a surprise 2-1 defeat away to Medeama ahead of their first-ever official meeting with Al Ahly in Africa's premier club competition.
Al Ahly's form in recent weeks has not been consistent as coach Marcel Koller would have hoped, with the African champions recording three wins and three draws in their last six matches across all competitions.
Both sides were unable to get their attacking game going in the first half, which was reminiscent of Al Ahlt's draw against Young Africans last weeknd as they waited until the final ten minutes to find the breakthrough.
Unlike last weekend, there would no late show for the Egyptian giants who were forced to settle for a share of the spoils after a spirited showing from Belouizdad.
The point keeps Al Ahly top of Group B after three matches played, while the Algerians sit in second spot.
Medeama 1-1 Young Africans
Medeama and Young Africans settled for a share of the spoils after playing to a 1-1 draw on Friday night.
Jonathan Sowah opened the scoring for the home side in the 27th minute after converting a penalty.
The visitors weren't behind for too long as Peodoh Zouzoua restored parity with his third goal of the campaoign in the 36th minute.
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