An Antimagic Field (PHB, p213) creates an area
[…] divorced from the magical energy that suffuses the multiverse. Within the sphere, spells can’t be cast, summoned creatures disappear, and even magic items become mundane.
Spells and other magical effects, except those created by an artifact or a deity, are supressed in the sphere and can’t protrude into it. [Emphasis mine.]
To what extent is divine magic supposed to be ‘created by a deity’? To the extent that it is unaffected by an Antimagic Field?