Adhan and Du'a After Adhan

Adhan is a dhikr in harmony. The Mu'aththin is the leader, when he pauses in between, then we, the people, repeat after him (except when he comes in the middle of the adhan.)

الله أكبر
Allahu Akbar - four times
(Allah is the greatest)
**Listener repeats

أشهد لا اله إلا الله
Ash hadu an la ilaha illal lah - two times
(I bear witness that there is no god but Allah)
**Listener repeats

أشهد أن محمدا رسول الله
Ash hadu anna Muhammadan Rasulullah - two times
(I bear witness that Muhammad, Allah bless him and grant him peace, is Allah's Messenger)
**Listener repeats

حَيَّ عَلَى الصَّلاَةِ
Hayya 'ala-salahh - two times
(Hasten to prayers)
**Listener says--"la hawla wala quwwata illa billah" (there is no might and power except by Allah)

حَيَّ عَلَى الْفَلَاح
Hayya 'ala 'l-falah - two times
(Hasten to salvation/ultimate success)
**Listener says--"la hawla wala quwwata illa billah" (there is no might and power except with Allah)

الصلاة خير من النوم
Assalatu khayrun min annawum -- two times for Fajr prayer adhan only
(Prayer is better than sleep)
**Listener says: sadaqta wa barikta

الله أكبر
Allahu Akbar - two times
(Allah is greater than any description)
**Listener repeats

لا إله إلا الله
La ilaha illal lah - two times
(There is no god but Allah)
**Listener repeats

After replying to the call of the Mu'aththin, you should recite the du'a after adhan:

"اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ، وَالصَّلَاةِ الْقَائِمَةِ، آتِ مُحَمَّداً الْوَسِيلَةَ وَالْفَضِيلَةَ، وَابْعَثْهُ مَقَاماً مَحْمُوداً الَّذِي وَعَدْتَهُ، [إَنَّكَ لَا تُخْلِفُ الْمِيعَادَ].

Allaahumma Rabba haathihid-da 'watit-taammati wassalaatil-qaa'imati, 'aati Muhammadanil-waseelata walfadheelata, wab 'ath-hu maqaamam-mahmoodanil-lathee wa'adtahu, ['innaka laa tukhliful-mee'aad]

O Allah , Lord of this perfect call and established prayer. Grant Muhammad the intercession and favor, and raise him to the honored station You have promised him, [verily You do not neglect promises].

On the authority of Jabar bin Abdullah, may Allah be pleased with him, the Messenger of Allah, may Allah's peace be upon him, said, "Whoever says,'O Allah, Owner of this perfect call and Owner of this prayer to be performed, bestow upon Muhammad al waseelah (a station in Paradise) and al fadeelah (a rank above the rest of creation) and send him upon a raised platform which you have promised him. Verily, You never fail in Your Promise', he will have my intercession on the Day of Judgment".

Audio of Du'a after Adhan

And Allah knows best.