As-salaam Alaikum,

Here are two important reason for making du'aa.

Rasul-ullah Sallallahu `alaihi wa sallam said “Dua is Ibadah (worship)" and “The ones who wants his du'aas to be accepted in the time of difficulty and hardship, should make frequent du'aas in the time of prosperity and peace.” {Tirmidhi}

 Du'aa before Eating

دعاء قبل الطعام

 اللهم بارك لنا فيما رزقتنا و قنا عذاب النار، بسم الله 

 ‘Allah-hum-ma barik lana fee-ma rah-zaq-tana wa qi-na `a-tha-ban-nar Bis-mil-lah.’

 ‘O Allah! Bless (the food) you provided us and save us from the punishment of the hellfire.
In the name of Allah.’

What to say before we eat.mp3

 Du'aa of Visiting the Sick

دعاء زيارة المريض

أسأل الله العظيم رب العرش العظيم أن يشفيك

 ‘as-alu Allah al-`atheem,
rub-ba al-ar-shi al-`atheem, an yash-feeka.’

 ‘I ask Allah the Supreme,
Lord of the Magnificent Throne, to cure you.’

What to say when visiting a sick person.mp3

 Du'aa When Entering the Bathroom

 ‘ `a-oo-tho bil-la-he min-nal khub-thee
wal-kha-ba 'ith.'

  ‘I seek refuge with Allah from the devil and all evil.'

Du'aa we say when entering the bathroom.mp3

  Du'aa When Leaving the Bathroom

Du'aa we say when leaving the bathroom.mp3

  Du'aa When Entering the House

Du'aa we say when entering the house.mp3

 Du'aa When Leaving the House

Du'aa we say when leaving the house.mp3

Du'aa upon Forgetting
to Start in the name of Allah

 ‘Bis-mil-lahi  aw-wa-la-hu wa a-khira’

 ‘In the name of Allah in its beginning and end.’

What to say if we eat before saying the Du'aa.mp3

 Du'aa while Making Wudu'

دعاء أثناء الوضوء

اللهم أغفر لي ذنبي، و وسع لي في داري، و بارك لي في رزقي

 'Allah-humma irgh-fir lee than-bi,
wa was-s`a-lee fee da-ri, 
wa ba-rik lee fee riz-qi.'

 'O Allah! Forgive my sins and enlarge (bless) my house & bless what You have provided me with.'

What du'a to say while making wudu.mp3

 Du'aa during at the Opening of Salah

دعاء أستفتاح الصلاة

 سبحانك الله و بحمدك و تبارك أسمك و تعالي جدك ولا إله غيرك

 ‘sub-ha-naka Allah-humma, wa bi ham-dik,
wa ta-bar-raka-es-muk, wa ta` ala jad-duk,
wa la ilaha ghay-ruk.’

 ‘Glory be to You Allah, and I praise You. Blessed be Your name, exalted be the majesty of You, and none has the right to be worshipped except You.’

What to say during the first takber.mp3

 Du'aa before Going to Sleep

  ‘bis-me-ka rab-be wa-d`a-to jan-be wa be-ka ar-fa-ho. fa-in-am-sak-ta naf-si fagh-fir la-ha.
wa 'in- ar-sal-ta-ha faH-faD-ha be-ma taH-fa-Du
be-he `e-ba-da-kas Sa-le-heen.'

 In Your Name, O Lord, I lay my side (to sleep).
And by Your Leave I raise it up. So if You take away my soul (during sleep) forgive it, and if You send it back (after sleep) protect it even as You protect Your pious servants.

Du'aa we say before going to sleep.mp3

Du'aa we say upon waking up.mp3

 Du'aa for Getting Undressed

Du'aa we say for getting undressed.mp3

 Du'aa for Getting Dressed

 

Du'aa we say for getting dressed.mp3