United Kingdom, Feb. 23 -- Backstreet Boys "pray" they don't get injured before going on stage.

The I Want It That Way hitmakers have always sent a message to God before their concerts, but now they are getting older, their spiritual requests have changed before their gigs at Las Vegas' Sphere because they are looking for protection during their high-energy dance routines.

Nick Carter, 46, told People magazine: "We pray that we don't fall, we pray we don't break an ankle, we get the lyrics, pray we don't pop [an] Achilles heel."

Bandmate AJ McLean, 48, added: "We've always had a circle up, whether it's just us five or it's us and our crew, our management, families, our close-knit team. No matter what, us five circle up, that's somethin...