A cyclist has become the victim of a shocking road rage attack with a Lebanese man calling him "Aussie scum" before pushing him to the ground.

The incident was filmed by the 23-year-old cyclist on a mobile phone in Summer Hill, in Sydney's inner west, at 7.30am on Wednesday.

The start of the footage shows a bike on the road with a crushed rear wheel and Milad Ayoub, 45, getting out of a white ute.

"I'm Lebanese, mate," he says to the cyclist before appearing to force him to the ground.

View photos A cyclist has become the victim of a shocking road rage attack. Photo: 7 News More

"I'm going to ruin your life."

My Ayoub has since apologised for the attack, but said he was provoked.

"I said to the police I slapped him and threatened his life - of course you take it all back," he told reporters.

"How many people do things and then regret it later on?"

The cyclist can be heard groaning as he is attacked and the driver repeatedly threatens to "follow him" and "destroy his life."

After he manages to stand up, the driver then follows him pointing and swearing.

The fight is believed to have started after the bike and vehicle almost collided.

The cyclist said he injured his arm and his back in the attack.

Police confirmed they are investigating the attack.

View photos The driver has since been identified by police. Photo: 7 News More