Which immigration permission are you living in Ireland on now?
Your stamp is printed on your Irish Residence Permit card. The immigration service's citizenship guide lists Stamps 0, 1, 1G, 3, 4 and 5 as counting towards citizenship, and its stamps page adds 1H; Stamps 2 and 2A do not count. People granted refugee status or subsidiary protection hold a Stamp 4, and only time after the grant counts.
Stamp 0, 1, 1G, 1H, 3, 4 or 5 None needed: I'm an EU, EEA, UK or Swiss citizen A student permission (Stamp 2 or 2A) I'm 18 to 23, came here as a child with my family, and have been in school or college since None yet: undocumented, or waiting on a protection decision Stamp 1A, or another stamp not listed here