The Family Of Imran - 3:52
"When Jesus sensed a disbelieving attitude from them, he said, "Who will help me in the way of Allah?"His disciples said, "We are God´s helpers; we have believed in God. Witness that we have become Muslims."
Related to Jesus' request for supporters against the unbelievers:
The Ranks/61:14
"O you who believe, be supporters of Allah. Just as Jesus, son of Mary, asked his disciples, "Who will be my supporters in the way of Allah?"His disciples said, "We are the supporters of Allah."A group of the Children of Israel believed and a group disbelieved. We supported the believers against their enemies; they prevailed."
يَٓا اَيُّهَا الَّذ۪ينَ اٰمَنُوا كُونُٓوا اَنْصَارَ اللّٰهِ كَمَا قَالَ ع۪يسَى ابْنُ مَرْيَمَ لِلْحَوَارِيّ۪نَ مَنْ اَنْصَار۪ٓي اِلَى اللّٰهِۜ قَالَ الْحَوَارِيُّونَ نَحْنُ اَنْصَارُ اللّٰهِ فَاٰمَنَتْ طَٓائِفَةٌ مِنْ بَن۪ٓي اِسْرَٓائ۪لَ وَكَـفَرَتْ طَٓائِفَةٌۚ فَاَيَّدْنَا الَّذ۪ينَ اٰمَنُوا عَلٰى عَدُوِّهِمْ فَاَصْبَحُوا ظَاهِر۪ينَ