The Church made up the Nicene Creed in 325. Do you want to kick that to the curb?
I believe it mostly.
The meeting was convened to deal with particular heresies and did not cover much of the things Rome made up before the meeting.)
(The mostly relates to this phrase, “We believe also in only One, Universal, Apostolic, and [Holy] Church;”
I don’t believe in the Roman Church, but do believe in one invisible church, comprised of every soul who has entrusted himself to Christ alone, via faith. This is in concordance with Scriptural teaching.
And by Apostolic, I believe the Apostles are the foundation of the church.
The Promulgation of canon law at Nicea I do not believe.
And it is worth noting the bishop of Rome was not recognized as a pope over Christendom.
Best.
About the church declaration at Nicea that made clear there is no papal role or authority over churches...
CANON #6
While the creed of the council was its central achievement, it was not the only thing that the bishops accomplished during their meeting. Twenty canons were presented dealing with various disciplinary issues within the church.
Of most interest to us today was the sixth, which read as follows:
Let the ancient customs in Egypt, Libya, and Pentapolis prevail, that the Bishop of Alexandria have jurisdiction in all these, since the like is customary for the Bishop of Rome also. Likewise in Antioch and the other provinces, let the Churches retain their privileges.20
This canon is significant because it demonstrates that at this time there was no concept of a single universal head of the church with jurisdiction over everyone else.
While later Roman bishops would claim such authority, resulting in the development of the papacy, at this time no Christian looked to one individual, or church, as the final authority.
This is important because often we hear it alleged that the Trinity, or the Nicene definition of the deity of Christ, is a “Roman Catholic” concept “forced” on the church by the pope. The simple fact of the matter is, when the bishops gathered at Nicea they did not acknowledge the bishop of Rome as anything more than the leader of the most influential church in the West.21
This nice excerpt came from: http://www.equip.org/article/what-really-happened-at-nicea/