Background Info:

The Nicene Creed is the most widely accepted and used brief statement of the Christian Faith. In liturgical churches, it is said every Sunday as part of the Liturgy. It is Common Ground to East Orthodox, Roman Catholics, Anglicans, Lutherans, Calvinists, and many other Christian groups. Many groups that do not have a tradition of using it in their services nevertheless are committed to the doctrines it teaches.

Traditionally, in the West, the Apostles' Creed is used at Baptisms, and the Nicene Creed at the Eucharist (AKA the Mass, the Liturgy, the Lord's Supper, or the Holy Communion.) The East uses only the Nicene Creed.

For additional info visit: Link 1, Link 2 and Link 3.

Icon depicting Emperor Constantine and the Fathers of the First
Council of Nicaea (325) as holding the Nicene Creed in its 381 form.

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 his 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; By 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, and 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 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.

Latin Version:

Credo in unum Deum,
Patrem omnipoténtem,
factórem cæli et terræ,
visibílium ómnium et invisibílium.
Et in unum Dóminum Iesum Christum,
Fílium Dei Unigénitum,
et ex Patre natum ante ómnia sæcula.
Deum de Deo, lumen de lúmine, Deum verum de Deo vero,
génitum, non factum, consubstantiálem Patri:
per quem ómnia facta sunt.
Qui propter nos hómines et propter nostram salútem
descéndit de cælis.
Et incarnátus est de Spíritu Sancto
ex María Vírgine, et homo factus est.
Crucifíxus étiam pro nobis sub Póntio Piláto;
passus, et sepúltus est,
et resurréxit tértia die, secúndum Scriptúras,
et ascéndit in cælum, sedet ad déxteram Patris.
Et íterum ventúrus est cum glória,
iudicáre vivos et mórtuos,
cuius regni non erit finis.
Et in Spíritum Sanctum, Dóminum et vivificántem:
qui ex Patre Filióque procédit.
Qui cum Patre et Fílio simul adorátur et conglorificátur:
qui locútus est per prophétas.
Et unam, sanctam, cathólicam et apostólicam Ecclésiam.
Confíteor unum baptísma in remissiónem peccatorum.
Et expecto resurrectionem mortuorum,
et vitam ventúri sæculi.
Amen.