Isaiah said this, or prophesied it...?
I think one way people go wrong when they're using random Bible quotes to prove a point, is they pick it up from anywhere in the Bible, and attribute it to God or Jesus, or Christianity as a whole.
If you are using this quote to say that God stated He created evil, yet Isaiah said it, you may have a difficult time pinning it on God.
I'm not refuting it, because I haven't read the passage.
Have you? In what context is the quote used?
(Admittedly too lazy to look it up right now).