"If good befalls you, it distresses them," meaning by good: victory. "But if you are struck by evil," a calamity from the polytheists, "they rejoice at it. And if you are patient and conscious of God, their plan will not harm you at all," meaning: they have no power except for harm through their tongues. "Indeed, God is encompassing of what they do," meaning: He will recompense them for what they do. [Verses 121-125]
﴿إِن تمسسكم حَسَنَة تسؤهم﴾ يَعْنِي بِالْحَسَنَة: النَّصْر ﴿وَإِنْ تُصِبْكُمْ سَيِّئَة﴾ نكبة من الْمُشْركين ﴿يَفْرَحُوا بِهَا وَإِنْ تَصْبِرُوا وَتَتَّقُوا لَا يَضُرُّكُمْ كيدهم شَيْئا﴾ أَي: أَنهم لَا شَوْكَة لَهُم إِلَّا أَذَى بالألسنة. ﴿إِنَّ اللَّهَ بِمَا يعْملُونَ مُحِيط﴾ أَي: يجازيهم بِمَا يعْملُونَ. [آيَة ١٢١ - ١٢٥]