New York ? Liza Minnelli’s bodyguard sounds as though he needed protection from her — charging that the aging songbird forced him to have sex with her and regularly beat him.

In a $100 million lawsuit, M’Hammed Soumayah, 58, portrays the “Cabaret” star as a violent, sex-starved maniac who harassed him with her bedroom demands until he relented out of fear of losing his $238,000-a-year job.

“During the course of his employment (Soumayah), without his consent, was forced to engage in sexual relations with Minnelli,” claims the bodyguard’s Manhattan Supreme Court lawsuit, unsealed Wednesday by a judge.

Soumayah’s lawsuit contends that the married father of two, who began working for Minnelli in 1994, has “physical evidence” of the alleged strong-arm tryst that he’s keeping under wraps. The suit charges that Soumayah, who also was the singer’s chauffeur and personal assistant, was “hit and assaulted” repeatedly by Minnelli.

“Fearing loss of his lucrative job, (Soumayah) tolerated Minnelli’s violent outbursts and did not complain about them to her or anyone else,” the suit states.

But Minnelli, 58, ended up firing Soumayah anyway in June after he refused to take a 50 percent pay cut, his lawsuit contends.

The entertainer has filed a $250,000 countersuit against Soumayah, claiming breach of contract.