PARIS — A French court on Thursday found a Saudi princess guilty of being complicit in the assault of a contractor in her Paris apartment three years ago, a case in which he had accused her of saying of him, “This dog must be killed.”

The princess, Hassa bint Salman, was given a 10-month suspended prison sentence and fined 10,000 euros, nearly $11,000 — a pittance to a Saudi royal whose family includes many billionaires. The princess, 42, is the daughter of King Salman, the Saudi monarch, and the half sister of the crown prince, Mohammed bin Salman.

She had accused the contractor of trying to take a picture of her that could be used against her in the tabloid press.

Princess Hassa’s bodyguard and assistant at the time, Rani Saïdi, was found guilty of assault. He received an eight-month suspended sentence and was fined €5,000. Under French law, suspended sentences do not involve time in prison unless a new crime or offense is committed within a given time period.