Geelong were impressive in their 27-point victory over the Brisbane Lions on Thursday night, but it came at a cost.

The Cats lost key midfield duo Quinton Narkle and Mitch Duncan to hamstring and groin injuries respectively early in the match and both players look set for a stint on the sidelines.

The pair will have scans on Friday to determine the severity of the injuries.

"I don't know whether this is a positive or not, but they were both issues where they were either pushed or really stretching," Geelong coach Chris Scott said post-match

"It wasn't the standard 'hammy' where they were running and it came out of nowhere. The initial feedback is that they were both minor.

"Duncan was assessed for a long time and there was the real possibility he could come back, so I think that was a good sign."

The Lions suffered injury blows of their own to gun onballers Hugh McCluggage (shoulder) and Mitch Robinson (quad).

McCluggage injured his shoulder just before half time and although he played out the pain, was clearly hampered by the injury.

Robinson suffered a quad injury late in the match and would not return.