1)
What is "Ra'ah Tachas Tovah"?
1.
Rashi citing Shocher Tov: Every year I (Yisrael) offer 70 bulls for the 70 nations, and I request rain [also for them], and they do evil to me!
2.
Radak: I did good to them, and they put evil on me.
3.
Malbim: Corresponding to "va'Ani Sefilah" (4 - I pray for them), they put on me evil in place of good.
2)
What is "v'Sin'ah Tachas Ahavasi"?
1.
Radak, Malbim: In place of my love for them, they put on me hatred.