We are saved by the Incarnation (cf St. Athanasius). We are being saved by participation in the sacramental life of the Church. And we hope that we will be saved when we face the Judge at the end.
Thank you for clarifying Schultz, I like this alot better than the "I am saved, I am being saved, and I will be saved".
Yes, I like Schultz's answer too. But I also don't mind the other.
As to the question of the OP, the answer is simply that Orthodoxy is not afraid of divine paradox. How can we be saved while still being saved? The answer is simply to keep struggling to work out our own salvation while maintaining faith in the eternally enduring mercy of God.