To deliver a friend from danger/ to drive the wolf from your friend's door
Figuratively: rescued his friend from great distress. Removed a harmful thing or severe problem from his friend's life (literally: drove a lion from his friend's territory).
("One who drives a lion from his friend's possessions does so knowingly, not unknowingly. Likewise, one who drives a lion from his friend's possessions suffers no loss" - Bava Kamma 58a)
Translation
Expression (Hebrew)
הִבְרִיחַ אֲרִי מִנִּכְסֵי חֲבֵרוֹ
Definition (Hebrew)
בְּהַשְׁאָלָה: חִלֵּץ אֶת חֲבֵרוֹ מְצֵרָה גְּדוֹלָה. סִלֵּק דָּבָר מַזִּיק אֶת בְּעָיָה חֲמוּרָה מֵחַיֵּי חֲבֵרוֹ (מִלּוּלִית: גֵּרֵשׁ אַרְיֵה מִשִּׁטְחוֹ שֶׁל חֲבֵרוֹ).
("מַבְרִיחַ אֲרִי מִנִּכְסֵי חֲבֵרוֹ מִדַּעְתּוֹ הוּא, הַאי לָאו מִדַּעְתּוֹ. אִי נָמֵי, מַבְרִיחַ אֲרִי מִנִּכְסֵי חֲבֵרוֹ לֵית לֵהּ פְּסֵדָא"- בָּבָא קַמָּא נָח ע"א)