The former Chelsea man is looking forward to featuring in his first Brazilian final, and compares his experiences this time around with those he encountered in Europe
The 34-year-old was born in Brazil, but spent almost his entire career in Europe, where he won titles with the likes of Porto, Barcelona and Chelsea, and chose to play his international football for his adopted nation Portugal.
However, as he prepares to kick off the first leg of his side's decisive tie in Rio de Janeiro, Deco admits he is experiencing differing emotions to those he felt ahead of previous finals in his career.
"I've never played a final in Brazil and it gives me a different feeling [compared to those in Europe]," Deco told Lancenet.
"In the end there's no time to put mistakes right. This final will be different because you have to be careful and take precautions because it is over two games.
"I'm glad we're in the final and have a chance to win a title."
The first leg will be played out at the Olimpico Joao Havelange on Sunday, as Fluminense look to capitalise on home advantage.