Fabianski came in for plenty of criticism after Andy Carroll's goal doomed the Gunners to a shock weekend defeat at the Emirates Stadium.
But he put the blunder behind him to earn Arsenal a vital 2-0 win at Wolves on Wednesday night.
The 25-year-old made a stunning save from Wolves defender Christophe Berra in the closing seconds when only one goal divided the sides before Marouane Chamakh netted his second.
Fabianski said: "To be honest, I have played for some time and have not been looking bad in goal.
"I was not happy with what happened against Newcastle but overall I have still felt in good shape.
"I was not thinking about 'bouncing back from Newcastle' and was only focused on having a good game here and helping the team.
"I think I'm getting experience which is really important for a keeper and that experience is helping me to prepare for another game.
"I don't know what will happen when Manuel (Almunia) is fit but I will keep doing my best and helping the team and we will see what happens."
Berra's low shot flew through a ruck of players and looked destined for the equaliser before Fabianski's razor-sharp reactions and he was mobbed by his team-mates after the game.
He said: "It was important and was pretty difficult.
"Cesc (Fabregas) was wondering how the ball went through him and he and Johan (Djourou) who were both attacking the ball.
"I saw it at the last second, I just reacted to the ball and saved it and was very happy to get the team three points."
Arsenal's third away win of the campaign kept them in touching distance of the leaders although they had to survive a battering from Mick McCarthy's side before triumphing.
Fabianski said: "The win says a lot about our spirit and focus on the game.
"We knew we had to win and come back stronger. It was important to get the three points.
"It was very important we bounced back very well. We started strongly and it was a difficult game.
"They really pushed us and put us under a lot of pressure but we defended well and scored two fantastic goals and we are very happy.
"I think the fact the first goal came pretty quickly (39 seconds) helped us.
"In the last two games, we didn't manage to score against Newcastle and, against West Ham, we had to fight to the last minute to get the goal.
"Against Wolves, we finally scored in the first minute and it really helped us and boosted our confidence in the way we wanted to play the game."
Arsene Wenger apologised after the game for the challenge by Cesc Fabregas on Wolves defender Stephen Ward who was taken off on a stretcher.
But the Arsenal boss insisted it had no malice attached to it and he believes hard but fair tackling is part and parcel of the English game.
He said: "You cannot just take the tackle out of the game.
"I have always said I am for tackling and I like the physical game and I like the commitment of the physical game in England.
"But it's down to the referees to make the rules respected.
"From that, I read I was supposed to be against tackling and that's not true."
Wenger revealed there were no fresh injury concerns ahead of Sunday's trip to Goodison Park, where England full-back Kieran Gibbs could be involved after a knee problem.
"We should not have any bad news from last night. The squad should be the same," Wenger told Arsenal TV Online.
"We could have Gibbs available to be part of it again too. We'll make the decision at the end of the week.
"He is back in normal training. It is just whether he is fit or not."
Wenger hinted he could look to freshen up Arsenal's starting XI, given the amount of games his squad have played recently in both domestic and European competition.
"There are always one or two changes," he said. "Some players have played a lot and we have some fresh, quality players on the bench.
"Some are not completely match-fit like Van Persie and Bendtner but in midfield there may be one or two changes."
Arsenal are hopeful Abou Diaby could soon be back in contention after what has proved to be a troublesome ankle problem.
"He is having a gradual test," said the manager. "He had the first yesterday - that was positive.
"He has another today so we'll see what comes out of it. At the moment the response is good."