And Russell has issued a call to arms to get the fans on board and back the team against one of the favourites for the competition.
“We need the crowd every night and I know we perhaps don’t give them what they want, but they’re such a huge part of this club and have been over the years,” he said.
“We need their backing and we hope they can come and help fill the place, make it noisy and the thing about this team is they like a crowd and an atmosphere.
“If I can lean into the crowd, ask them to stick with us, help us get stronger and better then I would ask that 100%.
“It’s a great fan base and I just think the passion of Scots and this club to get them back to where they want to be is going to take a combined effort. We need them with us always.”
The Glasgow side are looking to bounce back after Saturday’s 3-0 home loss to Guildford Flames, but won’t find it easy against a side they’ve failed to beat in their last 11 meetings.
As they prepare for the last eight clash, Russell has called upon his players to take their chances against a team that are defensively solid.
He added: “We know what we have to do against Cardiff on Wednesday. They’re a deep team and I don’t buy into them having a tough time. For me, the league is just that good.
“We have to come and compete, make sure we’re defensively good and be ready for them. They have a good defensive core and we have to take our chances.
“That’s the big thing for me – taking those opportunities when we get them and it’ll be an interesting game.”