Complete Joseph's words: "What you intended against me for evil, God intended for ___."

Answer: Good

Joseph told his brothers God meant it for good (KJV: "God meant it unto good") to preserve the lives of many people.

“But Joseph replied, “Do not be afraid. Am I in the place of God? As for you, what you intended against me for evil, God intended for good, in order to accomplish a day like this—to preserve the lives of many people.”— Genesis 50:19-20 (BSB)