The Toon sit just five points above third-bottom Wigan, who have a game in hand, with tricky matches away at West Ham and QPR coming up before a final-day home clash with Arsenal.
And Pards revealed: "You cannot come out of a defeat like that - in the manner we lost - and not be worried.
"I'm not going to criticise my players on an individual basis because we fell down collectively.
"It's not good enough for Newcastle and I will be seeing all the players at 10.30am on Monday morning, ready to train because we've now got to show we've got the heart for this scrap.
"We've got to roll our sleeves up and get the three to four points we need.
"I still believe in this group. We've not suddenly become a bad team overnight."