Interesting Dispel Magic Questions

[Blatant Beast]

The exact quote from Spirit Guardians: "You call forth spirits to protect you. They flit around you to a distance of 15 feet for the duration."

I saw Raiders of the Lost Arc, the Spirit Guardians definitely came from, and was tied to the caster, in that case, the Arc of the Covenant. :{}

Now a point in favor of your argument is the Summon Fey and other summoning spells from Tasha's Cauldron, and Spirit Shroud use the same formulation of "You call forth X".

A point against, is that the Conjure line of spells in the PHB, use the phrase: "You Summon".

Whether these preset phrases of WotC actually do correlate to Dispel Magic exposure, is an open question, though the repetition certain would lead one to think they are denoting some common characteristics for spell descriptions that use them. To What End, only the Devs and their Abyssal Masters know for sure.

If the phrases do correspond to internal usage by WotC just for that reason, WotC should share that information with it's customers, (might as well chip in the real CR calculation guidelines that WotC really uses and not the fugazi in the DMG).