Matt Damon's 6-year-old daughter reportedly stung by jellyfish during family vacation with Chris Hemsworth

Matt Damon to the rescue!

The Jason Bourne star was a real-life hero on Tuesday, when he reportedly helped his 6-year-old daughter, Stella, recover from a painful jellyfish sting in Australia.

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According to The Courier Mail, Stella was enjoying a relaxing day at Byron Bay's famous beach, The Pass, with the 46-year-old actor, along with her mother, Luciana Barroso, and sisters Isabella, Alexia and Gia. They were also joined by Chris Hemsworth and his wife, Elsa Pataky, and their three children. The outlet reports Stella let out a scream and ran out of the water.

After Matt and Luciana comforted Stella following the scary incident, Matt rushed to a local café to grab ice to help ease the pain, The Courier Mail reports, as paramedics treated her at the scene.

Get better soon, Stella!

Back in August 2015, the father of four had nothing but amazing things to say about his kids while chatting with ET at the opening of trainer Jason Walsh's Rise Nation fitness studio in West Hollywood, California.

WATCH: Matt Damon Gushes About Fatherhood: 'My Whole Life Opened Up When I Became a Dad'

"I think everything changes in little wonderful ways," he gushed. "My whole life opened up when I became a dad. I'm very much on the receiving end of all the good stuff."

PHOTOS: Matt Damon through the years