can someone name an anime scene where the "enemy" saves the main character?

Shugo chara!
Amu and Ikuto are enemies .

I don't recall if there was ever an actual moment where Hisoka ever "saves" Gon, but there probably was. He wants Gon to stay alive so he can grow up to give him a good challenge. Hunter x Hunter.

Kabuto Yakushi (Naruto Shippuden)

Kabuto saves Sasuke.....Kabuto saving sasuke by giving his sage chakra....he he eheh

Kabuto is the enemy who wants to kill sasuke for a long time..........he he hehe
with chakra he bring sasuke back to life............he he eh eh