Cronulla prop Andrew Fifita says there's no way he'll miss Saturday's NRL elimination final against North Queensland despite lasting just 22 minutes against Canberra on Sunday night.

The Sharks' enforcer came off the field at Canberra Stadium midway through the first half in the 38-18 win over the Raiders with a calf strain he's been battling for six weeks.

But the NSW State of Origin forward is certain medical staff will have him fit and ready to take on the Cowboys at Allianz Stadium on Saturday night.

"Hell yeah - I don't want to rest. I don't want to let my team down so I'll play though any pain," he said while wearing a precautionary moon boot post-match.

"It's alright; it's nothing major."

Fifita said he had treatment on the sideline and wanted to return to the field but, ultimately, decided not to risk turning the strain into a tear.

"I had semi-finals to think about. If I went back on, I could have done more damage," he said.

Just like star playmaker Todd Carney, who was a late withdrawal from the match, Fifita initially was in doubt to take the field in the all-but meaningless match.

However he risked playing after bizarrely tweeting on Thursday: "There is no way I'll be sitting out. Most important game of the year".

Sharks coach Shane Flanagan played down the severity of Fifita's injury after the Canberra match.

"I was thinking about not playing him at the start of the game, but I didn't want to put up with him on the sideline for that long so I put him on for 20 (minutes)," Flanagan said tongue-in-cheek.

"Yeah, 100 per cent (he'll be back next week) - he could have gone back on today."