Portsmouth boss John Mousinho admitted that their win over Leicester was the "toughest 90 minutes" of their last three winning matches.
The Blues managed to beat the Foxes to move themselves seven points clear of the relegation zone.
Adrian Segecic found Ibane Bowat from a corner for the game's only goal, sending Fratton Park into chants of "we are staying up" after the final whistle.
"That was probably the toughest 90 minutes of our last three games," he told BBC Radio Solent.
"It was hugely important and overall we deserved the win, we just had to get the job done because it wasn't a pretty game.
"The start of the game doesn't help with the injuries we picked up with Keshi (Anderson) and that changed the way that we play a little bit as Segs (Adrian Segecic) is a very different player.
"And then with the injury to Terry (Devlin) we had to restructure the back four and nothing got going in the first half at all.
"Thankfully, we had a couple of good chances before the goal and probably could have done better but managed to find the net."
Portsmouth are next in action on Tuesday when they travel to already promoted Coventry City.
