Your life depends on your statement to denounce atheism and/or agnosticism. You could claim anything to be a god so long as you would not claim to be atheist or agnostic. You are allowed to lie against any knowledge that you think you have so long as you make a clear statement that something "god" exist some where, some how even though you do not have to know, admit or describe how anything god exist.
Since lying, in this situation, doesn't hurt anyone, sure, why not. This harkens back to the Crusades when one side or the other would ask and then chop off heads. (Usually, during the Crusades the xtions chopped immediately, while the mussies gave the xtions a chance to convert - more soldiers that way).
Having being called out about overcomplicated questions and scenarios myself many times I can sympathize with the comments below. However prometheus gets to the nub of the problem. I can only suggest that you try these questions out on a few relatives or neighbors first. However I am prepared to be a tester by private message for a few further attempts . I have written multiple choice questions for national exam papers where clarity is vital. The overwhelming majority of my questions submitted were rejected.
This is almost what the Jews faced in Germany. Should they admit to being Jewish and end up dying? Should they try to talk someone out of taking them by saying they converted to Catholicism? In a way that would not matter. If your mother is Jewish so are you. But the scenarios are kinda alike. Think?