The Cattle - 6:52
Do not dismiss those who call upon their Lord morning and evening and seek only His pleasure. You are not responsible for their account. Nor are they responsible for your account. You would be unjust if you dismiss them.
The intention is that the people of the Book are not all alike, although their disbelievers are in the majority, and among them there are some who believe in Allah properly, so do not lump them with the other disbelievers:
The Cattle/6:52
Do not dismiss those who call upon their Lord morning and evening and seek only His pleasure. You are not responsible for their account. Nor are they responsible for your account. You would be unjust if you dismiss them.
The Cave/18:28
Seek to be with those who serve morning and evening, seeking the Pleasure of their Lord. Do not desire the attractive materials of this world´s life and take your eyes off them. And do not follow those whose hearts We have made heedless of Our Message and who mix up their affairs according to their whims.
The Family Of Imran/3:113
But not all of them are one. There is a righteous group from among the people of the Book who recite the verses of Allah at night and prostrate themselves.
The Family Of Imran/3:114
They believe in Allah and the Last Day, and they exhort to good and forbid evil and do good deeds. They are of the righteous.
The Family Of Imran/3:199
Among the People of the Book are those who believe in Allah and what has been sent down to you and what has been sent down to them. They have deep respect for Allah. They do not sell the Verses of Allah for a small price. Their reward is with their Lord. Allah is quick in reckoning.
The Table Spread/5:82
"Among mankind you will find the Jews and the polytheists the worst enemies of the believers. And closest in love to the believers are those who say: "We are Christians". For among them are priests and monks who are not arrogant."
The Table Spread/5:83
"When they hear what has come down to the Messenger, you see their eyes overflowing with tears because they recognize the truth. They say, "Our Lord, we believe; count us among the witnesses."
The Family Of Imran/3:110
You are the best community for the people. You exhort to good and forbid evil and believe in Allah. It would have been good for the people of the Book if they had believed. Most of them have gone astray, though there are some among them who believe.
The Iron/57:27
Then We sent Our messengers after them, one after another. We also sent Jesus the son of Mary and gave him the Gospel, and We put compassion and mercy in the hearts of those who followed him. But they invented for themselves a spirituality which We did not approve of them. Whereas We had asked them to follow only that which would please Allah. And they did not observe it properly. We gave the believers among them their reward, but many of them were astray.
The Cow/2:62
Believers, Jews, Christians and whoever of other religions: Whoever believes in Allah and the Hereafter and leads a virtuous life, their reward is with their Lord. There is no fear and no sorrow for them.