Wiktionary
if anything
adv. (non-gloss definition: Indicates that the only deviation from normal or expected is what follows, and not the deviation previously mentioned.)
Usage examples of "if anything".
I am very sorry if anything I have done should put a spoke in his wheel.
I want you to pledge that if anything happens to me you will watch over and protect her.
That includes the Vice President until she becomes President if anything happens to me.
What I want to tell you is if anything should happen to me, you will also die.
They tended, if anything, to go too far in the other direction, and to believe that the Sack knew everything.
Rachel, keep on trying to find out what you can, and let us know at once if anything happens.