{And how many a city}—meaning: how many a city—{was stronger in power}—its people were stronger in power—{than your city}—than the people of your city—{which drove you out}—its people drove you out; meaning: Makkah.
﴿وَكَأَيِّن مِّن قَرْيَةٍ﴾ أَي: وَكم من قَرْيَة ﴿هِيَ أَشَدُّ قُوَّةً﴾ أَهلهَا أشدُّ قُوَّة ﴿مِّن قَرْيَتِكَ﴾ من أهل قريتك ﴿الَّتِي أَخْرَجَتْكَ﴾ أخرجك أَهلهَا؛ يَعْنِي: مَكَّة.