O Allah, make me among the first to enter the prayer. — After Adhan
اللَّهُمَّ اجْعَلْنِي مِنْ أَوَّلِ الدَّاخِلِينَ إِلَى الصَّلَاةِ
Transliteration: Allaahummaj-'alnee min awwalid-daakhileena ilas-salaah
Translation: O Allah, make me among the first to enter the prayer.
Reference: General supplication