Luton pulled one back through Kasey Palmer on 40 minutes, before Liam Roberts made two big saves to send Stags in with a half-time lead.
But Luton found a way back into it with Shayden Morris levelling on 50 minutes.
Stags then held on for what could well have been their toughest point of the season.
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9. Jon Russell - 9
One of his best displays for Stags. Found plenty of space and exploited it to full effect with some great runs into dangerous areas. Did the dirty work well, too. Had an eye for goal with two goals to cap a fine display. Photo: UGC
10. Oliver Irow - 6
Did what he came on for in bringing fresh legs to help Stags see the game out. Photo: UGC
11. Regan Hendry - 7
Put in a bright and energetic performance and used the ball well to keep the tempo high and get Stags moving. Photo: Getty Images
12. Lucas Akins - 5
Careless with the ball at times and struggled a bit when defensive duties called. Easily beaten by Emilio Lawrence to set up Kasey Palmer’s goal. Offered nothing going forward in the second half. Photo: Getty Images