from my understanding from the article Rav Ovadia is calling for g-d to wipe out evil. If Ereket and Abbas feel that it is a threat against them, i guess they think of them selves as evil. and if that is true they should worry about G-d's revenge.
Justice Ministry: Information examined by AG about Gal Hirsch didn't come from police (Haaretz)
from the article: Shas spiritual leader: Abbas and Palestinians should perish