No. The Emperor was made Emperor by man. His name was used later to create the false "Donations". Is this what you mean by "used by God"?
No. The Emperor brought Christianity out into the open, where it could flourish and be spread throughout the world, as a part of civilization.
God certainly tolerated the Empereor being emperor. He did nothing to prevent it, and if legend is to be believed he sent his cross as a sign to the Emperor. In Hoc Signo Vinces
I find nothing about the Apostles Creed that was untrue. Why do you ask? Are you under the impression it was developed at the Council of Nicea?
No, but I was under the impression that the Nicene Creed was developed at Nicea. As TRD said, we'll make it easy and just go by the current Nicea-Constantioplean creed found in the liturgy today.
FYI. I believe many great thruths have come from the Early Christian Church, the catholic Church, and the Roman Catholic Church.
That's great. And one of them was the creed formulated in this council of which you wish to make some statement about the Emperor "controlling."
SD