Pitso Mosimane suffered his first league defeat since joining Al Ahly on Wednesday night, a result that sees his side remain behind bitter rivals Zamalek.
Despite a dominant display at home, the Egyptian giants were defeated 2-1 by Smouha SC in the Egyptian Premier League after a late goal secured Mosimane's first league loss since leaving Mamelodi Sundowns.
Mahmoud Abdel Halim put the away side ahead in the 11th minute with a neat finish into the bottom-right corner of the net.
Mosimane's side then took control of the game as they aimed to pull a goal back, which they eventually did in the 33rd minute through 28-year-old attacker Hussein El Shahat.
The Red Devils continued to see most of the ball after finding the all-important equaliser, but going ahead would prove too difficult a task despite a host of chances to do so.
Though the match ended with Al Ahly making 550 passes compared to Smouha's 259, and with the home team seeing 68% of the ball, a late goal in the third minute of stoppage time by Hossam Hassan would seal the Premier League champions' fate on the night.
The 27-year-old scored from 35 yards with a right-footed effort to lead his side to victory, securing what is only Mosimane's third defeat as Al Ahly manager.
The Club of the Century is still second on the league table, three points behind rivals Zamalek with two games in hand.
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