Third-placed United are not intimidated by the Roar, who have not been beaten in 17 games, and according to striker Bruce Djite, the side is ready for one of its biggest tests so far this season.
"It's a massive game and Brisbane Roar have been doing extremely well so far this season so they deserve the praise they've been getting," Djite said.
"But we're not daunted by the task of going to Suncorp Stadium whatsoever. Everyone is looking forward to the game and we can't wait to get out there and play against the team who are top of the table.
"They're big rivals and we want to show that we're better on the day and take the points."
And after playing just 19 minutes of Sunday's home clash with Central Coast Mariners because of inclement weather, Djite insists the players are chomping at the bit to get back to action on Boxing Day.
" After missing out on what was going to be a fantastic day against the Mariners last Sunday, this game has taken on even more importance for us," he added.
"It will be a good clash; there's no doubt about that. The Roar are playing some really nice attacking football and they're obviously working really hard.
"But we're also working hard and some things haven't quite gone for us this season with injuries and so forth. However, we have faith in ourselves and we believe we can go there and get the result we're after.
"For me - I'm confident going into the game and I don't see any reason why we can't get all three points and be the first team to beat them in quite a while."