Verse 1
1 look-alikeقُلْ يَٰٓأَيُّهَا ٱلنَّاسُ إِنَّمَآ أَنَا۠ لَكُمْ نَذِيرٌ مُّبِينٌ ٤٩
Say, "O people, I am only to you a clear warner."
متشابهات سورة الكافرون
Of the 6 verses of Surah Al-Kafirun, 3 resemble other verses of the Quran, sometimes down to a single word. Each one is compared word by word with its look-alikes, with the differences highlighted, so you do not mix them up when reciting from memory.
قُلْ يَٰٓأَيُّهَا ٱلنَّاسُ إِنَّمَآ أَنَا۠ لَكُمْ نَذِيرٌ مُّبِينٌ ٤٩
Say, "O people, I am only to you a clear warner."
وَلَآ أَنتُمْ عَٰبِدُونَ مَآ أَعْبُدُ ٣
Nor are you worshippers of what I worship.
The same verse occurs 2 times in the surah: 109:5