"And Nuh (Noah) indeed called upon Us," meaning: when he invoked against his people, "so We are the best of responders" to him.
﴿وَلَقَد نادانا نوح﴾ يَعْنِي: حَيْثُ دَعَا عَلَى قومه ﴿فلنعم المجيبون﴾ لَهُ