You can always say Hristos Voskrese, man.
Relavent story to follow:
So in a rather large town on the west coast, there dwells a certain protodeacon. Many many moons ago, this protodeacon's parish was having a big feast, in a big banquet hall, in the non-pascha part of the year.
His ex-wife, with was considered a bit of a shrew, was kinda the master of ceremonies. She asked him, "Father, why don't you say a few words." He looks at her and said, "There are only 2 words I will say to you." "Oh, and what are they?" "Hristos Voskrese!" When later asked by certain people, why he had said Hristos Voskrese, he replied "The saints, when encountering demons, would say even to them, Hristos Voskrese!"