The Palestine Liberation Organization asked the Arab League yesterday to convene a meeting of the foreign ministers of Egypt, Syria and Jordan with PLO representatives to assess prospects for reconvening the Geneva peace conference.

Arab League Secretary General Mahmoud Riad said in Cairo after meeting with PLO representative Said Kamal that the meeting is to be held within 10 days.

Riad said he supported this "logical request which would help in the success of a scheduled Arab foreign ministers' meeting in Tunis on Nov. 12." He said contacts would be made immediately but he offered no proposal on where the proposed session would be held.

Kamal, who is deputy director of political affairs for the PLO, said the ministers would "make a serious study" of U.N. General Assembly documents on preparations for reconvening the Geneva conference, including the Oct. 1 Soviet-American statement calling for Palestinian participation.

Kamal said the session would draft a joint Arab working paper on elements and procedures of a Middle East settlement that would be acceptable to the Arab states and the PLO.

Meanwhile, Syria's foreign minister, Abdel Halim Khaddam, left Beirut after a surprise two-day visit that was seen as capping efforts to restore peace in southern Lebanon. The visit coincided with a flurry of consultations between Lebanese and Palestinian leaders, indicating that a peace plan could be implemented in the volatile region near the Israeli border this week.

Palestianian along with leftist Lebanese forces, continued fighting there with Israeli-backed rightists after the civil war ended elsewhere in Lebanon almost a year ago.

Khaddam, who survived an apparent assassination attempt last Tuesday in Abu Dhabi, held "positive" talks with Lebanese leaders, a statement said.

In other Middle East developments:

Informed sources in Cairo and Libyan leader Muammar Qaddafi will visit Egypt within the next 10 days, ending a four-year quarrel that climaxed in a fierce border battle last summer.

Eyptian President Anwar Sadat met in Tehran with the shah of Iran. Sadat, accompanied by Foreign Minister Ismail Fahmi, made the overnight stop enroute to Saudi Arabia.

A Vatican spokesman confirmed that negotiations are under way with Israel for the release of Archbishop of Jerusalem Hilarion Capucci, the Greek Catholic prelate given a 12-year sentence in 1974 for smuggling arms to Palestinian guerrillas, Israel has indicated the release could follow a Vatican request.