Djokovic, who has six majors to his name, needs a Paris trophy to become just the eighth man in history to have won all four Grand Slam events.
He also has the advantage of having defeated Nadal in their last four meetings, including on clay in the Rome Masters final last month.
Djokovic was defeated by Nadal in the 2012 final in Paris but came desperately close to beating him in the semi-finals in 2013 when he led 4-2 in the final set.
"It's a very wide and very big court. He likes to have that visual effect, as well, because it appears that he gets every ball back," said Djokovic.
"He feels more comfortable when he plays on the bigger court. That's one of the reasons why he's so successful here.
"And knowing that I was that close to win against him the past two years gives me that reason to believe that I can make it this time. He's not unbeatable."
- Momentum with Nadal -
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The momentum, however, appears to be with Nadal who allowed Wimbledon champion Andy Murray just six games in a brutal semi-final demolition on Friday.
"It's nothing new for Novak to be in the final here. He has the motivation to win Roland Garros for the first time for sure," said Nadal who has won their last three Grand Slam meetings and all four of their previous encounters at Roland Garros.
