Two goals in the final nine minutes helped Rojiblancos seal a 3-2 win over Barca in Saudi Arabia.
Diego Simeone praised his Atletico Madrid warriors for securing the "almost impossible" to beat Barcelona in the Supercopa de Espana semi-finals.
Two goals in the final nine minutes helped Rojiblancos seal a 3-2 win over Barca in Saudi Arabia on Thursday as they booked their place in the finals of the competition [against rivals Real Madrid].
"I think we must live it with calmness, that we qualified for the final. It is important for the supporters, it is important for the club, it is important for the players," the Argentine said as Goal reported.
"It was a very tough game against one of the best teams in the world. They are the best when it comes to possession, and to attack with it.
"We suffered quite a lot during the first half. I think the second half was different, they kept their intensity and had chances until the 75tth minute, when something appeared that will always distinguish Atletico Madrid – the heart, the strength and the belief.
"We faced a difficult situation, almost impossible. But, we had the feeling that if we could get an equaliser, we could win the game, and that's what happened."