After opening the scoring at Camp Nou on Tuesday, Suarez picked up a second yellow card following an aerial challenge with Atletico's Koke in the 90th minute of Barca's 1-1 second-leg draw.
The result ensured Barca reached the final 3-2 on aggregate, but Suarez will miss the May 27 showpiece, though the Uruguay international hopes the two-time defending champions appeal.
"I laughed at my expulsion, it is something that you could see coming," Suarez told Gol.
"It is what the referee wanted. I am outraged. It was not even a foul.
"The referee has not given me any explanation, as always."
Barca were forced to dig deep as they secured a narrow victory over two legs, in a match which also saw Sergi Roberto and Yannick Carrasco sent off.
Substitute Kevin Gameiro gave Atletico some hope with seven minutes remaining, following Suarez's 43rd-minute opener, but the hosts held on to reach a third consecutive final.
Atletico's Antoine Griezmann also had a goal incorrectly disallowed for offside in the second half.
"We were aware that it would be complicated and we knew we had to suffer to reach the final," Suarez added.