Depending on how deep your faith is, you should maybe read the atheist view of evil and all their objections. BUT if your faith is still not deep enough (past the intellect) than postpone your reading of these:
God is not Great - Hitchens
Letter to a Christian Nation - Harris
The God Delusion - Dawkins (I dislike that man)
Any of Nietzsche’s works
You can just jump to these if you want:
The Problem of Pain - Lewis
A Grief Observed - Lewis
God is No Delusion (section on morality) - Crean
Is Belief in God Good, Bad or Irrelevant? - Jones
Handbook of Catholic Apologetics (the section of the “The Problem of Evil”) - Kreeft and Tacelli
Making Sense of Suffering - Kreeft
Second Friends (section on Problem of Suffering) - Walsh
These should give you a nice start. If not, then I am sorry!
God bless