29:10
وَمِنَ ٱلنَّاسِ مَن يَقُولُ ءَامَنَّا بِٱللَّهِ فَإِذَآ أُوذِىَ فِى ٱللَّهِ جَعَلَ فِتْنَةَ ٱلنَّاسِ كَعَذَابِ ٱللَّهِ وَلَئِن جَآءَ نَصْرٌ مِّن رَّبِّكَ لَيَقُولُنَّ إِنَّا كُنَّا مَعَكُمْ ۚ أَوَلَيْسَ ٱللَّهُ بِأَعْلَمَ بِمَا فِى صُدُورِ ٱلْعَـٰلَمِينَ
And of the people are some who say, "We believe in Allah," but when one [of them] is harmed for [the cause of] Allah, they consider the trial of the people as [if it were] the punishment of Allah. But if victory comes from your Lord, they say, "Indeed, We were with you." Is not Allah most knowing of what is within the breasts of all creatures?
Context in Surah Al-Ankabut
Nearby ayahs help place verse 29:10 in sequence and meaning.
وَوَصَّيْنَا ٱلْإِنسَـٰنَ بِوَٰلِدَيْهِ حُسْنًا ۖ وَإِن جَـٰهَدَاكَ لِتُشْرِكَ بِى مَا لَيْسَ لَكَ بِهِۦ عِلْمٌ فَلَا تُطِعْهُمَآ ۚ إِلَىَّ مَرْجِعُكُمْ فَأُنَبِّئُكُم بِمَا كُنتُمْ تَعْمَلُونَ
And We have enjoined upon man goodness to parents. But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them. To Me is your return, and I will inform you about what you used to do.
وَٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّـٰلِحَـٰتِ لَنُدْخِلَنَّهُمْ فِى ٱلصَّـٰلِحِينَ
And those who believe and do righteous deeds - We will surely admit them among the righteous [into Paradise].
وَلَيَعْلَمَنَّ ٱللَّهُ ٱلَّذِينَ ءَامَنُوا۟ وَلَيَعْلَمَنَّ ٱلْمُنَـٰفِقِينَ
And Allah will surely make evident those who believe, and He will surely make evident the hypocrites.
وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لِلَّذِينَ ءَامَنُوا۟ ٱتَّبِعُوا۟ سَبِيلَنَا وَلْنَحْمِلْ خَطَـٰيَـٰكُمْ وَمَا هُم بِحَـٰمِلِينَ مِنْ خَطَـٰيَـٰهُم مِّن شَىْءٍ ۖ إِنَّهُمْ لَكَـٰذِبُونَ
And those who disbelieve say to those who believe, "Follow our way, and we will carry your sins." But they will not carry anything of their sins. Indeed, they are liars.