Theosis in Catholicism and Protestantism?

Does the goal of thesis exist in Catholicism and Protestantism.

Theosis being the goal of mankind is to participate and become one with God and thus one another, in his energies and not essence. In other words the goal of Christian life is to restore the Image and Likeness of God which was marred by the fall.

scriptural backing
John 17:20-26
2 Cor 3:18

Yes...we catholics think so.

God challenges us....he says to us mankind " I created you, just for love: now you have to demonstrate to me to love as much I loved you: this is the goal of your existence"

That is why we catholics challenge God in return

It's a continuous challenge or rather a competition. In the movie "The Thorn Birds you can see that: the challenge of Meggie who fights against God".

So in our life we have to love: and love the others more than God.

YES, but in different terms. Theosis, from my 30 seconds of research, comes mostly from the Eastern Orthodox religions... which is still "Catholic"
So, it is no surprise that Theosis exists in Catholicism, though before today, I had not heard the term.
Growing up Roman Catholic.. we were always taught that our lived should be a journey to becoming closer to God. That in our thoughts in our words, in what we do, everything, should be focused on God, what he wants, expects, and to slowly become closer to him. That this is what the Sacraments are about.. this is how we "respond" to God's grace. We are saved by grace, but like all gifts, we must accept it. The acceptance of his gift is becoming closer to him.

In Protestantism, they would not calling it Theosis, or refer to the Sacraments, however, they WOULD agree that we should be closer to God, try to be the likeness of God.
The word "Christian" means roughly "little Christ" or "Christlike" and thus as Christians.. we are suppose to be like Christ was, or taught.
Protestants would say this happens AFTER we accept Jesus as our Savior, it is part of 'putting on the new' or dawning the armor of the Lord, or being 'rejuvenated' or other such words, which all basically mean the same thing... That we try to become one with God, in spirit and intention.
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To "Eleth" who posted before me...

Hmmmm... Catholics challenge God back? I'd be wary of citing a secular, Hollywood Movie as your example, just an FYI.
I have NEVER in all my study of Catholicism, heard this concept of challenging God back, as if he says "love as I loved you" and this puts us in a competition with him to love MORE.
IF that does... mankind will loose, as God is perfect, God is the Alpha and the Omega - there is nothing greater, so if someone does think that God's commands put us in competition, it is one we'll surely loose at.

I appreciate you trying to put it into words, but "challenging God" I have never heard of in any of the branches of Catholicism.

St. Athanasius of Alexandria wrote, "God became man so that man might become god." [the second god is always lowercase] (On the Incarnation 54:3, PG 25:192B). His statement is an apt description of the doctrine. What would otherwise seem absurd?that fallen, sinful man may become holy as God is holy?has been made possible through Jesus Christ, who is God incarnate. Naturally, the crucial Christian assertion, that God is One, sets an absolute limit on the meaning of thesis: it is not possible for any created being to become (ontologically) God, or even part of God (the hypnosis of Greek Neoplatonic philosophy
mind you all the same man cant even agree with each other and in each religion there are to many faiths one believes the other is wrong .and then we have catholics been forgive nag of their sins at confessions that cant be real as god if he does exorcist and yes my faith is not strong now i have lost a lot of my beliefs is the only one who can forgive you and that will be on the day of his judgment