The two African giants were scheduled to lock horns in the second leg on Sunday evening, with the winner set to face Pitso Mosimane's Al Ahly.
"Discussions continue between clubs CAF experts to find a pattern complying with regulations and returning to play spirit. At this stage, the postponement of semifinal Zamalek vs Raja is certain. Constructive spirit on both sides. To be continued," CAF announced on Twitter.
As a result of the second semi-final being postponed, the final will now be played at a later date.
"2019/2020 Total CAF CL Final - At the request of Egyptian authorities, the final is now postponed. Official discussions are underway to find a new and suitable date. Stakeholders are working in good faith and Consultations are ongoing," the statement added.
