The Egyptian presidency said in a statement the air strikes "violated international law and pinciples that will further complicate the situation." The raids reportedly targeted rockets destined for Lebanon's Hezbollah.
The Arab League, which like Egypt sides with rebels against Syrian President Bashar al-Assad, demanded the Security Council "act immediately to end Israeli attacks on Syria," which it called a "dangerous violation of an Arab state's sovereignty."
The presidency in Cairo affirmed "its extreme opposition" to the Syrian regime's brutal crackdown on rebel-held areas, but accused Israel of "exploiting its internal conflict".
A diplomatic source in Beirut told AFP three sites were targeted -- a military facility, a nearby weapons depot and an anti-aircraft unit in Sabura, west of the capital Damascus.