I’m not sure I’ve seen that, but if it was from the original series (not the reboot, which I’ve mostly not seen) I’ve probably just forgotten.
https://x-files.fandom.com/wiki/Lazarus_Bowl
It’s usual for Carter et al to incorporate actual fringe literature into story ideas and plots.
The Lazarus Bowl
https://www.mysteriesoftheunexplained.com/content/LazarusBowlContent.htm
So is this really a legend or is it a made up for the show?
Btw the ep is called Hollywood A.D.