Everytime I think about the death of a sheikh who was killed by a suicide bomber, I become stressed everytime I'm alone and I sometimes feel scared at night. What do I do? Is there any dua that can help me overcome what I'm currently going through? Also, does it matter if I say my dua in English or Arabic? Will Allah still accept my dua if it's in English?
Aassalaam alaiykum Omar, A similar question, came up only recently and I am posting the very same duaa to ward off the deception of obstinate devils and therefore remove your stress. The duaa is found in Ahmad No# 15461 with an authentic chain and Ibn As-Sunni #637. See Al-Silsilah Al-Sahihah No# 2995:
أَعُوذُ بِكَلِمَاتِ اللهِ التَّامَّاتِ الَّتِي لَا يُجَاوِزُهُنَّ بَرٌّ وَلَا فَاجِرٌ مِنْ شَرِّ مَا خَلَقَ ، وَبَرَأَ ، وَذَرَأَ ، وَمِنْ شَرِّ مَا يَنْزِلُ مِنَ السَّمَاءِ وَمِنْ شَرِّ مَا يَعْرُجُ فِيهَا ، وَمِنْ شَرِّ مَا ذَرَأَ فِي الأَرْضِ وَمِنْ شَرِّ مَا يَخْرُجُ مِنْهَا ، وَمِنْ شَرِّ فِتَنِ اللَّيْلِ وَالنَّهَارِ ، وَمِنْ شَرِّ كُلِّ طَارِقٍ إِلَّا طَارِقًا يَطْرُقُ بِخَيْرٍ ، يَا رَحْمَنُ
I seek refuge (for my mother/ father, etc and myself) with Allah’s perfect words which no righteous or unrighteous person can transgress, from all the evil that He has created, made and originated.
(I seek refuge) from the evil that descends from the sky and the evil that rises up to it. and (I seek refuge) from the evil that is spread on Earth and the evil that springs from it.
And I seek refuge from the evil of the tribulations of night and day, and the evil of one who visits at night except the one who brings good, O Merciful One. Ameen
Recite morning and night. You may also seek protection for loved ones by inserting their names where I have indicated.
There is also dua Protection from Evil (in the morning and evening)
أَعُوذُ بِكَلِمَاتِ اللهِ التَّامَّاتِ مِنْ شَرِّ مَا خَلَقَ (ثلاث مرات)
I seek refuge with Allah’s perfect words from the evil of His creation. (three times)
Note: Whoever says this du'a in the evening, nothing shall harm him/her until dawn. Sources: At-Tirmidhi No# 3604; Sahih Ibn Hibban No# 1022
Dear Omar, you may find these duas and many others that our beloved Prophet recited at duas.com
To answer your question regarding supplications, Muslims can make personal supplications or prayers (du'a) in their own words, in any language, but there are also recommended examples from the Qur'an and Sunnah.
In the Qur'an, Allah says:
"When My servants ask about Me, I am indeed close to them. I listen to the prayer of every supplicant, when he calls on Me. Let them also, with a will, listen to My call, and believe in Me, so that they may walk in the right way" (Qur'an 2:186).
So, go ahead and perform the dua and rest assured that Allah Subhana wa ta’ala hears all our calls. May Allah remove your stress and worries Omar. Ameen