The Argentine coach has urged his men to take things one step at a time after booking their ticket for the round of 16 on Wednesday
The Primera Division outfit beat Austria Wien 4-0 on Wednesday evening to book their ticket for the last-16, but Simeone has stressed that they will not let their success go to their head.
"We are taking things match by match in the Spanish Liga and we have the same philosophy in the Champions League, knowing our chances," the 43-year-old said at a press conference.
"I'm happy with the work of the team, because we took our opportunity to reach the first knockout round.
"In our next group games we can give playing time to other players because they deserve it. Now we will play against two great teams in Zenit and Porto with an element of calm, because we don't have to fight to get through to the next round.
"The team is growing, chances keep coming and that gives more opportunities for our forwards to score."
Atletico resume domestic action on Saturday when they travel to Villarreal.