The Roosters five-eighth is set to cap an incredible season by making his debut for the Kangaroos.
Kangaroos coach Mal Meninga said Keary deserved his inclusion in the national squad.
“It’s unfortunate to lose Cameron for the next two matches but there’s far more important things in life than football sometimes,” Meninga told NRL.com
“We’ve brought Luke straight into the squad and he fully deserves the opportunity after what was a fantastic season.
“He’s delivered on big occasions countless times over the past few years and I’ve got no doubt he’ll deliver again if called upon during the next two weeks.”