In the Orthodox tradition, today is the Synaxis of the Archangel Michael and the Other Bodiless Powers. Here is the apolytikion for the day:
O Commanders of the Heavenly Host, we the unworthy beseech you, that through your entreaties you will fortify us, guarding us in the shelter of the wings of your ethereal glory, even as we fervently bow before you crying: "Deliver us from all danger, as Commanders of the Powers on high!"
Τῶν οὐρανίων στρατιῶν Ἀρχιστράτηγοι, δυσωποῦμεν ὑμᾶς ἡμεῖς οἱ ἀνάξιοι, ἵνα ταῖς ὑμῶν δεήσεσι τειχίσητε ἡμᾶς, σκέπῃ τῶν πτερύγων, τῆς ἀΰλου ὑμῶν δόξης, φρουροῦντες ἡμᾶς προσπίπτοντας, ἐκτενῶς καὶ βοώντας· Ἐκ τῶν κινδύνων λυτρώσασθε ἡμᾶς, ὡς Ταξιάρχαι, τῶν ἄνω Δυνάμεων.
Hat tip: Eric Thomson.