CAIRO – Egypt's President Mohammed Morsi struck an uncompromising stand Monday over his seizure of near absolute powers, refusing in a meeting with top judicial authorities to rescind a package of constitutional amendments that placed his edicts above oversight by the courts.

Morsi's supporters, meanwhile, canceled a massive rally planned for Tuesday to compete with a demonstration by his opponents, citing the need to "defuse tension" at a time when anger over the president's moves is mounting, according to a spokesman for the president's Muslim Brotherhood.

The opposition rally was going ahead as scheduled at Cairo's Tahrir square, birthplace of the uprising that toppled Hosni Mubarak's regime nearly two years ago.