Deco has called on his Chelsea team-mates to come out on top in the 'war' that is the Premier League title race.
With three games of the season left, Chelsea are just one point clear of reigning champions Manchester United.
This weekend Deco and his Chelsea side face Stoke on Sunday, but they could be in second by that point as United host Tottenham on Saturday.
"The first thing we need to know is that we are in first," he told the club's official website.
"The last three games will be difficult and of course there is pressure in our minds because we need to win our games if Man Utd win theirs.
"It is a war and we need to be prepared, but if you said on the first day of the Premier League in August we would be one point clear with three games to go, two at home and one game away, we would all say 'okay, we'll sign'!
"This is okay. It would be better if we won or Man Utd lost on the weekend, but that didn't happen.
"Now our moment is here - we have three games and we need to play well and be together."
Chelsea's title hopes suffered a major setback with last Saturday's 2-1 defeat by Tottenham but Deco insists that is not a major significance.
"We knew at 2-0 we could score. We tried and had chances but didn't score. It was frustrating but we need to carry on," he said.
"I don't think we played a bad game - we didn't have a lot of luck - and we need to recognise they played well."