Greetings in that Divine and Most Precious Name of Our Lord and Savior Jesus Christ!
However the the relationship is not equal correct? And one must always remember at all times our created engergies which we use in synergy with the uncreated energies are not even ours in the first place but belong to God?
It is not equal, but God has feigned equality on our part in order to respect our free-will. God wants us to love Him, sincerely, genuinely, not by coercion or force. In this regard then, He has given us as entities, as living beings who are also spiritual, free-will to exercise. We have our own "energies" which we manifest into the world. God respects this. God allows for this, even though He is always superior. Essentially, in this cosmological playground where God is unaffected existentially, we are God(s). In the Created world, we manifest the Uncreated Grace of God into Creation. These are our human energies, our human actions, and God allows for these to occur so He respects them, and in this regard we are on equal footing. If we chose to reject God, He respects that out of His love for us. Does that concretely effect or even affect an Uncreated God? Hardly, but it does have cosmic reverberations in a Created world with Created beings like ourselves.
Our very existence is a manifestation of synergy with God's Grace. Our cells, our atoms, our subatomic particles which make up the composition of our bodies (e.g. hypostasis) are not self-existing, they require God's actions to manifest such into actual existence. So every nano-second of human existence is a product of Grace, and we have no moments in our lives where God isn't acting in cooperation with us. That is God's side of the equation. On the Human side, synergy is affirming these actions of God, and willfully acting on them, through thought, through feeling, through actions. We have to bring Grace into our own human realities, because even while God is not separated from us and we are not self-existing, we have been gifted the free-will to chose to ignore this ontological reality. We can pretend not to notice God acting in our lives, and subsequently even act to the contrary and manifest evil and sin into our lives by outright rejecting Grace, even while at the same time we are always fundamentally interacting with Grace even to maintain our very existence. We are living entities, with free-will, and we must act and us this free-will to affirm God in our lives. We must in the most literal sense, learn to agree
with Him This is works in the Orthodox-Catholic sense. From my experience, many Protestants would feel uncomfortable with this idea, that we have to cooperate with God to bring about Grace into our lives daily. It is not just God working through us, but us and He working together, but it takes as much works (literally energies) on our part because of free-will.