Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
What should be read on the last night of the year?
You should read the duas of the pious mentioned in the book ‘Kanz al-Najah wa’l-Surur,’ you should seek forgiveness from Allah (istighfar) and bestow prayers upon the Prophet ﷺ in abundance.
Habib Ali al-Habashi composed a special prayer to be read at the end of the year. You can download the prayer with translation here.