يُخَٰدِعُونَ ٱللَّهَ وَٱلَّذِينَ ءَامَنُواْ وَمَا يَخۡدَعُونَ إِلَّآ أَنفُسَهُمۡ وَمَا يَشۡعُرُونَ ٩
They [think to] deceive Allāh and those who believe, but they deceive not except themselves and perceive [it] not.
Translation: Saheeh International (English)
Each word's meaning and sound
They think that they can deceive Allah and the believers by acting outside as if they believe, while inside hiding their disbelief; but really, they only deceive themselves, without realising it. Allah knows all that is secret and hidden, and has told the believers what these people are like.
Al-Mukhtasar in interpreting the Noble Quran