"We complicated ourselves only in a set-piece action", Messi said.
Suarez then rounded Lyon goalkeeper Anthony Lopes to lay on a flawless pass for the unmarked Philippe Coutinho to nudge into an open net and double Barca's lead, although Lyon hauled themselves back into contention with a second-half strike from Lucas Tousart.
"We're relaxed and what we have to prepare for is the toughest test possible, which is what's coming now in the final stage of the season".
Barca captain Messi opened the scoring with a "Panenka" penalty chipped straight down the middle in the 17th minute.
"We suffered a little bit at 2-1 and, to be honest, it wasn't necessary", he said.
Suarez added: "We were great in the first half".
Bayern then drew level after Joel Matip inadvertently poked the ball into his own goal in an attempt to prevent the deadly Robert Lewandowski from getting a clear goalscoring opportunity. There was a moment of suspense before [the ball crossed the line] and I thought it wasn't going to go in.
Meanwhile, Coutinho, who joined from Liverpool for €160 million last January, has been linked with a return to England after seeing his place in Barca's side taken by Ousmane Dembele. You never know what the future holds.
"Barca head coach Valverde was pleased with Coutinho post-match amid his struggles this season". "Sometimes he is just unstoppable".