Ireland second-row Donnacha Ryan knows his charges have to put in a performance similar to last week's when they take on Argentina this Sunday.
Ryan was watching from the stands in Cardiff against France as the Irish secured top spot in Pool D and a quarter-final showdown with the in-form Pumas.
And he couldn't help but be impressed by his team's solid performance.
"The lads did a fantastic job here at the weekend. The atmosphere was incredible. A lot of the boys mentioned that after the game and said how emotional the anthems were," he said.
"But we are coming up against a very tough side (Argentina) and we are really going to have to be on our game.
"Having seen them play against South Africa in Durban and in the first game of the tournament against New Zealand, when they led for 67 minutes, we know how big the task is in front if us. To push the world champions that close means they are not far off it."
He added: "I thought they moved the ball well in that game. They are fantastic operators in the lineout, and they are explosive. They are not afraid to tap and go too."
Irish supporters should once again be in full voice at the Millennium Stadium and while Argentina's fans are also vocal, Ryan is excited by the prospect of being roared on by those wearing green.
"It was amazing (last week). I was on the field for the warm-up and it was a pretty empty stadium. I thought there must be a pretty big queue outside," he said.
"Then, all of a sudden, it was full. The Irish must be the fastest group of supporters around.
"When we got back to the hotel afterwards a lot of our fans were there and it was great to catch up with them.
"There is a massive amount of excitement ahead of the weekend, but we have to focus on the jobs we are going to do on the pitch. Emotions can run high, but we have to be focused on the job.
"We are delighted to be in this position, but we are not getting too far ahead of ourselves. We need to fix up a few things and make sure that everyone coming in is on board with what we are doing."