Tens of thousands of Egyptians are expected to join protests in Cairo's Tahrir Square on the first anniversary of the uprising which culminated in the toppling of President Hosni Mubarak.
Syria has rejected an Arab League call for President Bashar al-Assad to hand over power to his deputy.
The league, meeting in Cairo, also called on Syria to form a national unity government with the opposition within two months.
The Arab League is beginning a series of discussions over whether to extend its controversial monitoring mission to Syria, amid ongoing violence.
A report by the head of the mission will be discussed by a panel in Cairo on Saturday, before Arab League foreign ministers make a decision on Sunday.
The ruler of the Gulf state of Qatar has said Arab countries should send troops into Syria to stop government forces killing civilians there.
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Tens of thousands of Egyptians are expected to join protests in Cairo's Tahrir Square on the first anniversary of the uprising which culminated in the toppling of President Hosni Mubarak.
Syria has rejected an Arab League call for President Bashar al-Assad to hand over power to his deputy.
The Arab League is beginning a series of discussions over whether to extend its controversial monitoring mission to Syria, amid ongoing violence.
The ruler of the Gulf state of Qatar has said Arab countries should send troops into Syria to stop government forces killing civilians there.
