Porto started well and claimed a deserved lead through
The 2-1 success leaves
Atletico is still unbeaten in all competitions with nine wins from 11 games and claimed last weekend claimed its first victory over arch-rival Real Madrid since 1999 with a 1-0 triumph at the Bernabeu.
Martinez then set up
The Spanish side then came within a whisker of drawing level in the 41st minute when it hit the woodwork from a Gabi corner, but two minutes later it survived a let-off of its own when Varela's well-struck effort was saved by Courtois's feet.
Porto deserved that half-time advantage but Atletico came out positively after the break and was rewarded with an equaliser in the 58th minute when Godin beat two defenders and home goalkeeper Helton to power home Gabi's free-kick.
Both sides pushed for a winner after that with Porto substitute Quintero firing just wide and Helton doing superbly to tip behind Garcia's shot, but it was Atletico which would find the decisive breakthrough as Turan's close-range finish from Gabi's clever free-kick inflicted a first defeat of the season on its Iberian rival.