Rooney has a mixed record with spot-kicks and became the fourth United player to miss one this season when he struck wide in United's 2-1 Barclays Premier League victory over the Gunners at Old Trafford on Saturday.
But that did not deter him from stepping up four days later to take on the responsibility again when the Red Devils were awarded another one with five minutes of normal time remaining in their Champions League Group H clash at the Estadio AXA. Asked if he had had any doubts about taking the penalty, Rooney said: "No, not at all."
After substitute Robin van Persie's 80th-minute effort had cancelled out Alan's opener - also a penalty - for the hosts four minutes into the second half, it was an opportunity to put United in front for the first time and Rooney, who had earned the spot-kick when Nuno Coelho was adjudged to have fouled him, made the most of it by beating goalkeeper Beto with a firm shot.
The 27-year-old appeared to skid a little on the wet surface as he fired the ball in and he conceded afterwards that he had been "a bit fortunate".
Rooney added: "Obviously I was disappointed at the weekend, not only to miss but to miss the target. I said after the game it wasn't good enough and (against Braga) I was a bit fortunate; I slipped but thankfully it's gone in so I'm happy with that.
"At the time it happened so quick, but obviously I've seen it going towards the goal and the keeper going the other way. I was happy with it going in but obviously I've been quite lucky with that."
With Javier Hernandez adding a close-range finish in stoppage-time, United went on to complete a 3-1 victory that was their fourth win in as many Group H fixtures and guarantees them top spot and a place in the last 16.
It was the just the latest in a host of come-from-behind wins for United this season that had certainly not looked on the cards for most of the contest in Portugal, which they had struggled to really get going in and was halted for around 15 minutes not long after Alan's goal by some of the floodlights going out in a power cut - seemingly to the visitors' benefit.
"I think we can play better football - at times it was too slow but the result is the most important thing," Rooney said. "I think we had quite a bit of possession, we just needed a bit more movement and speed to our play, and thankfully in the last 10 or 15 minutes, when it mattered, we got them."
Source: PA
Source: PA