Ahli doctor Walid Abdul-Baqi revealed that Shawky and Fadl struggled to train with the team on Wednesday morning due to minor thigh and calf injuries respectively.
But it seems that the duo should be fit for the round of 16 game this weekend.
Goalkeeper Sherif Ekrami was named in the squad for the first time since sustaining a knee injury back in November.
Outcast midfielder Shehab Ahmed also returned to the squad after missing out on several previous games under Jose.
Amir Sayoud and Ahmed Hassan are not registered, so their names were not included in the 20-man list.
Center-half Sherif Abdul-Fadil also made the trip after being dropped from the last league game against Gaish.
Ahli squad vs. ZESCO
Goalkeepers: Mahmoud Aboul-Saoud, Ahmed Adel, Sherif Ekrami
Defenders: Hossam Ghaly, Ahmed Al-Sayed, Sherif Abdul-Fadil, Wael Gomaa, Sayed Moawad, Ahmed Fathi, Mohamed Samir
Midfielders: Mohamed Abou-Treika, Moataz Eno, Mohamed Barakat, Hossam Ashour, Mohamed Shawky, Shehab Ahmed
Strikers: Mohamed Fadl, Osama Hosni, Geddo, Dominique da Silva