1)
What is "Ra'ah Tachas Tovah"?
1.
Radak: They ask from me money that I never knew that they had anything with me. I did good to them, and they did evil to me!
2.
Malbim: Normally, one comes to harm another bodily only as vengeance, i.e. the other harmed him. They do evil in place of good; I benefited them!
2)
What is "Shechul l'Nafshi"?
1.
Radak #1: It is like death of my Nefesh.
2.
Radak #2: They take from me [money] via Chamas, and seek to take my Nefesh and cause it bereavement, if they can trap it.
3.
Malbim: They seek to bereave my Nefesh from inheritance of [closeness to] Hashem.
