Tafsir of Al-Baqarah 2:137

Allah said,

فٳن آمنوا بمثل ما آمنتم به

So if they believe in the like of that which you believe, Allah said, if they, the disbelievers among the People of the Book and other disbelievers, believe in all of Allah's Books and Messengers and do not differentiate between any of them,

فقد اهتدوا

then they are rightly guided, meaning, they would acquire the truth and be directed to it.

وإن تولوا

but if they turn away, from truth to falsehood after proof had been presented to them,

فٳنما هم في شقاق فسيكفيكهم الله

then they are only in opposition. So Allah will suffice you against them, meaning, Allah will aid the believers against them.

وهو السميع العليم

And He is the Hearer, the Knower. Allah said,

صبغة الله ومن أحسن من الله صبغة ونحن له عابدون