The Greeks have no injury problems ahead of Friday's quarter-final, aside from Papadopoulos's name-sake Avraam, who has had surgery on a knee injury sustained in the tournament opener against Poland.
They will be without talismanic playmaker Giorgos Karagounis, who scored the only goal in a shock 1-0 win over Russia but is suspended and should be replaced by Grigoris Makos in midfield.
"Advancing to the quarter-finals was our first target in these games," Kyriakos Papadopoulos told a news conference at the team's base outside Warsaw.
"From now on there is nothing for us to lose. Whatever we achieve from here is going to be huge for us and we will try very hard to stay in the tournament."
Papadopoulos, who plays for Germany's Schalke 04, said it was a plus for the Greeks that many of the squad play their club football in the Bundesliga.
"Of course we're going to study a lot of Germany with our coach and his team but I'm not going to discuss tactics here," he said, singling out Germany striker Mario Gomez as an excellent player.
"Its important that a lot of the Greek players have played in the Bundesliga. That gives us an advantage because we already know how they play."
"You cannot compare football to politics. Its a bad thing for you to start to make stories and compared football and sports with politics," he said. "Its just a game. We're going to play and enjoy it because we love it, nothing else."
"We don't play for ourselves, we don't play for the team, we play for 11 million people back in Greece who are waiting for a smile, for a reason to get out in the street and celebrate," Samaras said.
"I think we gave them that against Russia. Now we are in the last eight nations in Europe. We really don't care who we play from now on."
