Foreigner & Styx -- Domo Arigato Firefighters for Saving Our Burning Buses

These are the Best of Times for Philly firefighters ... because Jukebox Heroes Foreigner and Styx just dumped a bunch of cash on the real-life heroes who saved their tour buses from some Unusual Heat.

No Head Games here ... the '70s and '80s rock Renegades performed Thursday night in Camden, NJ -- and decided to say thanks to the Blue Collar Man.

A rep for Styx tells us both bands decided to donate all the proceeds from their CD sales at the show to the Philadelphia Fire Department's Local #22 Widow Fund.

Of course, the Hot Blooded firefighters made an Urgent response Wednesday when flames engulfed two tour buses -- yes, two ... no Double Vision.

So, if you Want to Know What Love Is -- there ya go, firefighters. And you too, Mr. Roboto.