‏اَلسَلامُ عَلَيْكُم وَرَحْمَةُ اَللهِ وَبَرَكاتُهُ‎ When I am behind an Imam can I say Ameen or Glorify Allah or seek refuge (silently) when an ayah comes like a dua or when ayah is related to hell or something related to the greatness of Allah ? I generally do this when reciting Quran

Ustadh AbdulAziz al-Haqqan

There is a big debate regarding this, and it is best to stay away from this in obligatory prayers.