Combating terrorism and extremist organizations as well as efforts to counter Iranian meddling in the affairs of the region's countries will also figure in the talks between the Egyptian president and the Crown Prince during the latter's three-day official visit to Egypt.
Riyadh counts Cairo among its Arab allies.
Saturday's decision by the Egypt Supreme Court nullifies the contradictory rulings two other lower courts had given, with the Supreme Administrative Court opposing ceding control of the islands and the Court of Urgent Matters approving the deal.
A Saudi government spokesman did not immediately respond to requests for comment on the Egypt visit. In April 2016, Egypt and Saudi Arabia reached a deal, per which the two disputed islands become under Saudi sovereignty.
Prime Minister Saad Hariri Friday night capped his three-day official visit to Riyadh with a much-anticipated meeting with Saudi Crown Prince Mohammad bin Salman, centering on bolstering Lebanese-Saudi ties, strained since Hariri's resignation crisis previous year.
Opponents of the agreement said it amounted to selling off Egypt's sovereign powers and that it violated the constitution, which bars the surrender of any territory. The Egyptian official gave no further details.
Saudi Arabia has remained Egypt's biggest supporter since the Egyptian army ousted Mohamed Morsi, Egypt's first freely elected president, in a 2013 military coup led by Sissi.
Sisi stands for re-election this month in a vote he is nearly guaranteed to win after all serious challengers dropped out, including a rights lawyer who shot to fame after successfully challenging the islands deal in court.