The Paraguayan club have not lost at home in the South American continental competition this season, drawing just one of their six matches at the Estadio Arsenio Erico and keeping four clean sheets, including their 2-0 victory over Defensor Sporting in the semi-finals.
Nacional qualified for their maiden Copa Libertadores final with a 2-1 aggregate victory over Defensor, while their opponents in the decider - Argentina's San Lorenzo - will also be making their debut.
"It's a big joy for us because we started the league with a loss at home and we needed the win," Lusardi said.
"I am happy for the goals, especially when we are in the final of the Copa [Libertadores]."
Derlis Orue and Silvio Torales will be critical to Nacional's chances with both midfielders having scored three times in the Copa Libertadores this season, while for San Lorenzo, striker Mauro Matos has played a key role both as a creator and finisher in the knockout stages.
The second leg of the Copa Libertadores final will be held at San Lorenzo's Estadio Pedro Bidegain on August 13.
