God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
The best way to deal with slander is to pray about it: God will either remove it, or remove the sting from it. Our own attempts at clearing ourselves are usually failures; we are like the boy who wished to remove the blot from his copy, and by his bungling made it ten times worse.
The DNA of sin is selfishness. Sin inserts me into the middle of my universe; the one place reserved for God and God alone. Sin reduces my field of concern down to my wants, my needs, and my feelings. Sin really does make it all about me.