The Greek, Celtic's most prolific frontman in Europe this season with five goals, three coming in the group stage, will be handed a key role by manager Neil Lennon.
All five of Samaras' goals in the competition have come away from home and he hopes he can find the back of the net this evening.
He said: "I don't know why I've managed to score the goals away from home. Sometimes that is just the way it happens.
"Like all the players here I have enjoyed being involved in the tournament.
"It would be nice to score against Juventus but for me it doesn't matter who scores as we are part of the team."
Samaras also hopes fouls committed inside the penalty area by Juve defenders will be punished by the referee after what happened in the first-leg.
"There is nothing you can say and nothing you can do," said the striker.
"The game they played at set-pieces was unfair. Hopefully this time the referee is going to see things clearly.
"When someone is holding or pushing you, how much more clever or how much stronger can you be?
"In every other situation the referee would probably give a free-kick, but a penalty? That part of the game was unfair against us."