Either the Catholic Church acknoledges that there are protestant churches that are part of the catholic and Aplostolic Church, or the Catholic Church does not acknowledge the validity of the Nicene Creed. Pretty simple.
The Nicene Council was Sola Scriptura. They stated that the Nicene Creed must be in agreement with Scripture. How can the Roman Catholic Church believe that the phrase "one holy catholic and Apostolic Church" refers to itself when this belief is not Scriptural? The one holy catholic and Apostolic Church is the group of all believers. That's Scriptural. But again, we'll disagree. And besides you haven't answered one of my Scriptural objections to the Catholic Church's authoritarian claims.
"When Jesus came into the coasts of Caesarea Philippi, he asked his disciples, saying, Whom do men say that I the Son of man am? And they said, Some [say that thou art] John the Baptist: some, Elias; and others, Jeremias, or one of the prophets. He saith unto them, But whom say ye that I am? And Simon Peter answered and said, Thou art the Christ, the Son of the living God. And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed [it] unto thee, but my Father which is in heaven. And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven. Then charged he his disciples that they should tell no man that he was Jesus the Christ." - Matthew 16:13-20
Throughout the Acts of the Apostles, St. Peter is clearly the leader of the Christian community (Acts 1:15, 5:1-10). And again, he is listed first among the Apostles in the New Testament (Matthew 10:2; Mark 3:16-19; Luke 6:13-14). Before St. Peter was crucified, he appointed St. Linus as his successor. Why should this practice not be carried on to the present day? There is an unbroken line of Popes from St. Peter down to the present-day Pope. The Papacy is the oldest institution in the Western World. How could it have survived 2000 years without the grace of God and the guidance of the Holy Spirit?
St. Hegessipus in the 2nd century of the Church had already compiled a list of the popes, listing the current one at the time (Pope Anacletus) as the eleventh successor to St. Peter.