BEIRUT, SEPT. 27 -- The leader of the Iranian-backed Shiite Moslem faction Hezbollah today discounted as "cheap intelligence service intrigue" an allegation that he accepted a $2 million bribe from the Saudis with the blessing of then-CIA director William J. Casey.

Sheik Mohammed Hussein Fadlallah's spokesman described the claim, made in a new book by Washington Post assistant managing editor Bob Woodward and published in the newspaper over the weekend, as a fabrication aimed at "slandering the purity and integrity of his eminence's struggle which has made of him a great symbol for Islamic movements across the world."

According to Woodward's book, "VEIL: The Secret Wars of the CIA, 1981-1987," Casey personally arranged for the Saudi intelligence service to assassinate Fadlallah. On March 8, 1985, a car bomb blew up in a Beirut suburb where Fadlallah lives. He escaped injury, but 80 people died.

Woodward said U.S. and Saudi officials had connected Fadlallah to three bombings of American facilities here in 1983 and 1984.

After the assassination attempt failed, Saudi agents, with Casey's approval, gave Fadlallah a $2 million bribe in food, scholarships for his followers and other goods to persuade him to stop the car bombings of American and other western targets here, Woodward said.

In a statement, a spokesman for Fadlallah denied that the Shiite spiritual leader had accepted money from "any official quarters." The statement also repeated Fadlallah's previous denials that he was involved in the bombing attacks. "We have nothing to do with the martyrdom operations {suicide bombings} against American and western targets," the statement said.

{The Saudi Press Agency quoted an official source Sunday as denying the allegations in Woodward's book and published in The Post that Saudi Arabia was involved in the Fadlallah assassination attempt, Reuter reported.

{"Everything published by . . . the newspaper concerning the kingdom {Saudi Arabia} attributed to the writer Woodward, quoting a man who is dead (Casey) and cannot answer to what is being attributed to him, is baseless," the official Saudi news agency quoted the source as saying.}

The Saudis have denied previous reports of their involvement with U.S. officials in other clandestine activities. For example, Saudi Arabia repeatedly denied its role in the Iran-contra scandal. Testimony at congressional hearings revealed that the Saudis secretly contributed millions of dollars to help the Nicaraguan rebels after solicitations from Reagan administration figures.