The "Athanasian" Creed is heresy. It wasn't written by Athanasius, who actually had a hand in the Nicene Creed. And it contradicts the Nicene Creed, particularly in making the persons so equal there is no point in there being more than one! There is no room for a Father and Son where the two are co-equal and co-eternal, versus the Nicene Creed's "begotten of the Father before all worlds" which shows non-co-eternality.
The "Athanasian" Creed is heresy. It wasn't written by Athanasius, who actually had a hand in the Nicene Creed. And it contradicts the Nicene Creed, particularly in making the persons so equal there is no point in there being more than one! There is no room for a Father and Son where the two are co-equal and co-eternal, versus the Nicene Creed's "begotten of the Father before all worlds" which shows non-co-eternality.