As others have alluded to, "evil" is too ambiguous a word to have much of any meaning if we're talking universal scale - which I would assume when we're talking about a "god's" thoughts on "evil."
When we humans use the word "evil," we're specifically invoking the idea of things that hurt humans. This is a rather myopic view of "good/bad." For example, a virus is, in no way, "evil." That would be an extremely sophomoric assessment to make. Yes, contracting a virus is detrimental to human health, and yes, people can even die due to viral infection. But can you entertain the idea that there is "good" also being done in that situation? For example, the human succumbing to the virus means that the virus was able to take over a very significant portion of the human's cell-system, and procreated quite profusely, and very likely infected other human beings that the host came in contact with during the whole process. This is EXACTLY what the virus was attempting to accomplish! In other words, this is quite a win for the virus. This is "good" from the virus' point of view (if it even has one - likely not). But don't you see? "Good" is simply SO subjective, and SO relative to the point of view that the word almost has no meaning until we have that frame of reference. i.e. that we are specifically talking about "good" for humans.
Now, take the perspective of a "god." What is "good" in the eyes of a god? Wouldn't it most likely be anything that was advantageous to the god? And if that is the case, then how do you know that humans are advantageous to the god? How do you know that the god considers what is "good" for humans to be "good" from its perspective as well? How do you know? Because you were told this by someone else? Is that all you have? Perhaps you should think on this topic some more.