I’m sorry Lactantius, but that looks like εὐσέβεια to me, not δεισιδαιμονία:

The mother of Galerius, a woman exceedingly superstitious, was a votary of the Gods of the mountains. Being of such a character she made sacrifices almost every day, and she feasted her servants on the meat offered to idols. (De Mortibus Persecutorum 11)