The Poland stopper enjoyed his return to the Emirates Stadium, having left in the summer after helping the Gunners win the FA Cup to secure more regular first-team football.
Fabianski got himself in the way of everything Arsenal sent his way on Monday night, when Arsene Wenger's side were punished for their lacklustre finishing as Bafetimbi Gomis headed in a late winner with just four minutes left, given via the Goal Decision System following a desperate lunge on the line by David Ospina.
The 30-year-old Fabianski received a good reception from the Arsenal supporters behind each goal, but insists his performance was never about anything other than getting the victory which puts Swansea just two points behind sixth-placed Tottenham.
"I spent seven years here and I have loads of friends here so to play against them was a strange experience, and sometimes it even felt like a training game," Fabianski said.
"It was tricky
You never know how you are going to feel until you experience something.
"It was a strange arriving at the ground and seeing all the people, but there was a game to play and I had to be focused."
Fabianski added: "I am past that frustration [at Arsenal]
It has been a long time since I left Arsenal so I am just enjoying my position at the moment at Swansea.
"I am very happy with my decision to come here and I am really proud of the team's performance."
Arsenal manager Wenger may have been less than impressed by the way Garry Monk set his side up on Monday night, but it proved effective for the Swans, who were able to record a third straight victory.
Swansea captain Ashley Williams is confident the squad can maintain that momentum against second-placed Manchester City at the Liberty Stadium on Sunday.
He said: "We always try to hunt down the next team ahead of us in the table, and I don't know if we will or not, but we have given ourselves a good chance.
"Sunday will be another difficult game, but if we are going to get anything from it, we are going to have to put a shift in, and it will be a bit different because we are at home, so would like to see a bit more of the ball."
Source : PA
Source: PA