The movie star was called into action for real during shooting for the latest instalment of the high-octane franchise at the North Yorkshire Moors Railway.
He rushed to prevent a cameraman who had lost his footing on top of a moving stream train from sliding down the carriage, the Daily Mail reported.
Cruise reportedly grabbed hold of the cameraman, who was wearing a harness, and helped him back onto his feet while shooting a scene last week.
The 58-year-old is expected to visit the Peak District soon, with a spectacular set is taking shape in Stoney Middleton, Derbyshire.
A railway line has been set up at Darlton Quarry there, with the track extending out over the precipitious drop.
Cruise will appear in Mission Impossible 7 which is scheduled to hit cinemas in May 2022, with Hayley Atwell and Simon Pegg.
The Hollywood star has also been seen in Pickering, while a helicopter associated with the film flew over Scarborough.
Location shoots have already taken place in Venice, Rome, Surrey and Norway.
Mission Impossible 7 was originally slated for release in November 2021 but has been delayed due to the coronavirus pandemic.
Mission Impossible 8 is scheduled for release in July 2023, having originally been set to hit screens in November next year.
Top Gun: Maverick, the sequel to Tom Cruise’s much-loved 80s classic, is due to premiere this November.