اَللَّهُمَّ إِنِّي أَسْأَلُكَ الْجَنَّةَ وَأَعُوذُ بِكَ مِنَ النَّارِ

Allaahumma 'innee 'as'alukal-jannata wa 'a'oodhu bika minan-naar

O Allah, I ask You for Paradise and seek Your protection from the Fire. Narrated by Abu Huraira (RA): The Messenger of Allah (ﷺ), asked a man, "What do you supplicate in your prayer?" The man says, I recite Tashahhud and say- (The dua is mentioned above) I can’t recite dua as beautifully as you, nor can I recite dua like Mu'adh!" Then Prophet (ﷺ) said, “We also supplicate like you!”

Reference: Sahih (Albani). Ibn Majah: 910