he helped / he gave victory
Form I verb. Past: نَصَرَ, Present: يَنْصُرُ. Related: نَصْرٌ (victory/help), نَاصِرٌ (helper), أَنْصَارٌ (helpers/supporters). God is النَّاصِرُ (The Helper).
Surah An-Naṣr (110) was the last surah revealed. The Anṣār (Helpers) of Madinah who supported the Prophet are named from this root, honored for their sacrifice.