The 29-year-old striker scored a 92nd-minute penalty against Ivory Coast to secure the Ethniki's progress through the group stage at their opponents expense.
Following the historic triumph, Samaras is quoted by ESPN as saying: "I don't remember anything during the penalty. I wanted to give happiness to all our people back home. We are proud for what we did. I hope we give some joy to our people back home.
"We played better than Ivory Coast. We had opportunities to finish this match after 1-0, but we never stopped believing that we can qualify until the last minute. We are proud for this team and I hope all of Greece are proud of us."
Greece will face Costa Rica on Sunday in the next round.