Martin O'Neill believes that Belgium will come out against Ireland "with all guns blazing" but that his players will be ready for anything they fire at them.
But the Ireland boss has given up on Jon Walters and short of a miraculous recovery, he will not be fit to play in Bordeaux on Saturday.
"When the group was announced, anything other than Belgium finishing at least second would not have been contemplated so they will come out with all guns blazing and we will have to deal with that," claimed O'Neill.
"We will have to show the same attitude we did against Sweden but that's not a problem for us. We must have a go, go and compete, be strong on the ball."
O'Neill revealed that Walters would not be fit to play football if the fixture was taking place today.
"I can't see him making that game so it's concentration totally now on trying to get him fit for the Italian game," he said.