John Travolta on Lawsuit -- PROOF I Didn't Grope That Masseur

John Travolta was 2,475 miles from L.A. the day a masseur claims the actor sexually assaulted him at a Beverly Hills hotel -- and TMZ has obtained photographs which his people say will prove it.

We're told the photos were snapped January 16th in NYC. Travolta sources say they have proof positive of the location and date of the photos -- New York, January 16.

The photos could torpedo the case of John Doe #1, an unidentified male masseur who filed suit against Travolta for allegedly grabbing his penis and scrotum the very same day ... during a massage session at the 90210 hotel.

And there's more ... a receipt from a meal Travolta ate at Mr. Chow in New York ... also on January 16th (below).

The bill totaled $382 and the tip was $100 -- the kind of generous tip for which Travolta is known. We've confirmed Travolta ate the meal at Mr. Chow.

Another masseur filed suit against Travolta yesterday, claiming the actor tried to grab his penis during a massage session on January 28th in Atlanta. The same lawyer is handling both cases.

Travolta's attorney Marty Singer calls both lawsuits "absurd and ridiculous."