"One of the driving factors to push through the pain and play with the ankle is to be a part of it [Cooper's 100th game].
"I've played with him for a long, long time and it's something I would not want to miss because he's a good friend."
Cooper endured a shocking night in the 35-21 loss to the Hurricanes, making several poor decisions, but Genia says the mercurial playmaker's confidence is one of his key assets.
"That's something you want in your teammates and in the players around you, guys who want the ball, want to take the game on," he said.
"You know when he has the ball he's going to create something from nothing."
The Wallabies halfback is hopeful Cooper can deliver at Eden Park with the Reds' finals hopes on a knife-edge after three straight defeats.
"This is do-or-die essentially," Genia said.
Unheralded Brumbies flanker Jarrad Butler says that to win the title you have to prove yourself against the best - and they don't come much better than returning Crusaders flanker Richie McCaw.
McCaw's expected return from a fractured thumb against the Brumbies in Christchurch this Saturday will not only be a big boost for the Crusaders, but an "exciting privilege" for New Zealand-born Butler.
-AAP