The Nicene Creed was first adopted at the Council of Nicaea in 325 and then amended by the First Council of Constantinople in 381, which is why it is sometimes also called the Niceno-Constantinopolitan Creed. The Church Fathers who attended these Councils intended the Creed to be an orthodox statement of what Christians believe, in contrast to numerous heretical groups who were denying either the divinity of Christ and/or the Holy Spirit.
Eventually, the Creed introduced to being part of the liturgy for the Eucharist, and as such, some consider the receiving of Communion being linked to reciting this Creed much like the Apostles' Creed is for Baptism.
The Nicene Creed, as taken from the Book of Common Prayer, is:
I BELIEVE in one God the Father Almighty, Maker of heaven and earth, And of all things visible and invisible:
And in one Lord Jesus Christ, the only-begotten Son of God, Begotten of the Father before all worlds; God, of God; Light, of Light; Very God, of very God; Begotten, not made; Being of one substance with the Father; Through whom all things were made: Who for us men and for our salvation came down from heaven, And was incarnate by the Holy Ghost of the Virgin Mary, And was made man, And was crucified also for us under Pontius Pilate. He suffered and was buried, And the third day he rose again according to the Scriptures, And ascended into heaven, And sitteth on the right hand of the Father. And he shall come again with glory to judge both the quick and the dead: Whose kingdom shall have no end.
And I believe in the Holy Ghost, The Lord, The Giver of Life, Who proceedeth from the Father and the Son, Who with the Father and the Son together is worshipped and glorified, Who spake by the Prophets. And I believe One, Holy, Catholic, and Apostolic Church. I acknowledge one Baptism for the remission of sins. And I look for the Resurrection of the dead, And the Life of the world to come. Amen.