Rashi on Genesis 42:4/רש"י על בראשית מ״ב:ד׳

1פן יקראנו אסון LEST MISCHIEF BEFALL HIM — And at home could not mischief befall him?! Rabbi Eliezer the son of Jacob said: We may infer from this that Satan accuses a man at the time of danger (Midrash Tanchuma, Vayigash 1).