Stage set for showdown over Egypt's parliament The Muslim Brotherhood calls for a million-man protest Tuesday An administrative court may overrule President Mohamed Morsy The constitutional court stands behind its ruling dissolving parliament Cairo (CNN) -- Egypt's highest court said Tuesday its ruling that dissolved parliament was "final and binding," despite the efforts of the nation's newly elected president to override the mandate and call lawmakers back into session. In a move that may set the stage for a showdown, President Mohamed Morsy announced Sunday he was overriding the military edict and recalling lawmakers. The decision is in defiance of the generals who have run the country since the 2011 revolution that ousted longtime strongman Hosni Mubarak. Parliament was set to convene at 12:30 p.m. Tuesday, according to Ahmed Sobea, spokesman for the Freedom and Justice Party. However, the Higher Constitutional Court declared after a Monday meeting that its "ruling to dissolve parliament is final and binding." The court threw out the parliamentary vote in June, prompting Egypt's military to assume legislative power and dissolve parliament. Egyptian parliament to convene Tuesday, official says Twenty-five cases have been filed by individuals protesting Morsy's decision to reinstate parliament, the court said. On Tuesday, attorneys will be brought before the administrative court, which will decide on the cases. The court is the only one that can overturn a presidential decree. "I expect the court to overrule the presidential decision tomorrow," said Aly Hassan, a judicial consultant affiliated with the Justice Ministry. One case was also filed against Morsy in administrative court in the city of Mahmoudia, calling for his ouster since he failed to follow a constitutional court order under the law, Hassan said. The court ruled that the constitutional articles regulating parliamentary elections were invalid. Morsy's recalling of parliament is likely to please his backers in the Muslim Brotherhood, which won the largest share of seats in parliament in elections this year. However, it also puts him at odds with the military and with constitutional experts. The Supreme Council of the Armed Forces met Sunday for five hours, but no statement was released afterward. On Sunday, council spokesman Lt. Col. Mohamed Askar said Morsy's decision and "its repercussions" would be discussed at the emergency meeting. Meanwhile, dozens of riot police and barriers surrounded the parliamentary building. The Muslim Brotherhood has called for a million-man protest Tuesday in support of Morsy's decision, Sobea said. His comments come after Egyptian state news agency MENA reported that parliament Speaker Mohamed Al Katatney called for lawmakers to hold a public meeting Tuesday. On Sunday, in a statement issued to CNN, Al Katatney said that he welcomed Morsy's decision and that lawmakers would convene "within the coming hours." Hassan told CNN on Sunday that the order "will be met with objections from constitutional legal experts, and it may be the first test of the relations between Morsy and the Supreme Council of the Armed Forces since Morsy took office. Restoring parliament would take power away from generals. But he added: "Overturning the constitutional court ruling and reinstating parliament is against the constitution, especially that there is no appeal on such court rulings." Morsy, Egypt's first freely elected leader, assumed office on June 30. Morsy takes on military over parliament Sons of ousted Egyptian president on trial