The Magpies' goalkeeper says that Alan Pardew's team can claw themselves out of relegation danger with a battling win against mid-table Fulham at St James' Park on Sunday
The 25-year-old has recovered from an ankle injury and made his return in the midweek 3-1 defeat by Benfica in the Europa League.
Newcastle currently sit 15th in the Premier League, just three points above the relegation zone, but a win against Fulham at St James' Park on Sunday will see them all but safe for next season.
"The next three games are massive. We need to get three points off Fulham. We know that," Krul told The Chronicle.
"We’re still down the bottom in a dogfight. I think we can take a lot of confidence out of the game [against Benfica]. We have to recover quickly and work really hard on Sunday. It’s hard to just watch games – I can’t watch games very easily.
"I’m glad to be back on the pitch. It’s horrible and I don’t like watching games, It’s a shame that I had another injury. Last season I played every game. It’s something I have to cope with and learn from."
This season's reverse fixture at Craven Cottage ended in favour of Fulham when they defeated the Magpies 2-1.
"I think we’ll be fine. They’ve got massive quality – we know that – but we’ve got massive quality and with 52,000 behind us, they’ll push us on to win,” Krul continued.
Asked for his reaction to the Benfica game, he said: "[I've got] mixed feelings. Personally, I’m happy I’m back, but it was just a shame we gave them a leg up, really.
"It’s a good cushion for them, unfortunately. We survived the first half, and had some great chances as well, don’t forget that."