A teenager was stabbed multiple times during a fight over a girl at a ritzy Staten Island house party , authorities said.

The 18-year-old was partying at a large home worth nearly $1 million on Koch Blvd in Annadale, when another teen stabbed him nine times in the chest and back at around 11 p.m. on Monday, cops said.

The man was rushed to Staten Island University Hospital where he underwent surgery, officials said. He is expected to survive.

The 17-year-old attacker is still being sought by cops.