كتب : وكالات
Striker Fadl suffered a hamstring strain, which forced him to make way for Mohamed Barakat early in the first half of the 1-1 draw with Arab Contractors.
Holding midfielder Ashour, who was kept on the sidelines in the previous four matches, saw his ankle injury relapse after making his return in Saturday's league game.
He was replaced with Afrotto two minutes from the hour mark.
Ahli's caretaker boss Abdul-Aziz Abdul-Sahfi 'Zizo' will face a dilemma should Fadl be ruled out of the capital derby, given that Liberian hitman Francis Doe is also injured.
The absence of Ashour would also be a blow for Ahli ahead of the anticipated clash with Zamalek.