The greens held their nerve without the ball and turned away a wealth of Orange City attacking raids to win 29-7 at Cowra Rugby Ground last weekend and that's reason for confidence, but Urban said his troops need to lift again if they want a grand final berth.

Especially considering the exciting Kangaroos outfit will be smarting from a convincing defeat at Bathurst Bulldogs' hands in the major semi-final.

"Our defensive effort was definitely the biggest positive (from last weekend), we didn't have a lot of ball in the first half but we held and our line, got up and held our nerve," he said.

"We're confident we can do that again, we don't work on defence as much as we probably could at training but we know how important it is and we've spoken about it (this week), because defence wins finals footy.

"They're strong, they're mobile and they'll probably throw it around a bit, so we need to be eyes up across the paddock and working together."

That's something Urban's greens didn't do the last time they met Roos, with the Dubbo side running away with their round 12 fixture and scoring a 32-19 win.

Granted Emus were light on for troops that day, but even so, it went a long way to costing the greens a spot in the top two and that still stings for Urban.

Roos also got the better of Emus in round seven two, but Urban's confident his side can flip the script on the Dubbo outfit on Saturday and progress to their sixth consecutive decider.

"We need to keep backing ourselves, we need to keep trusting ourselves," he said.

Saturday's second grade preliminary final kicks off at 1.45pm at Endeavour Oval.