Allahumma Inna Hadha

It is advisable to say the supplication mentioned by Sayyid Ibn Tawus in Iqbal al-Amal

اَللّهُمَّ إنَّ هِذا شَهْرُ رَمَضانَ
O Allah: This month of Ramadhan,
اَلَّذي أنْزَلْتَ فِيهِ الْقُرْآنَ،
in which You revealed the Qur’an,
هُدىً لِلنّاسِ وَبَيِّناتٍ مِنَ الْهُدى وَالْفُرْقَانِ
As guidance for people and clear proofs of true guidance and distinction (between the right and the wrong),
قَدْ حَضَرَ.
Has commenced.
يا رَبِّ أعوذُ بِكَ فيهِ مِنَ الشَّيْطانِ الرَّجيمِ،
O Allah: in this month, I seek Your protection against Satan, the accursed,
وَمِنْ مَكْرِهِ وَحِيَلِهِ،
And against his tricks and his ruses,
وَخِداعِهِ وَحَبائِلِهِ،
And his deception and his trickeries,
وَجُنودِهِ وَخَيلِهِ،
And his parties and his riding forces,
وَرِجْلِهِ وَوَساوِسِهِ،
And his on foot forces and his evil inspirations,
وَمِنَ الضَّلالِ بَعْدَ الْهُدى،
And against straying off after being guided,
وَمِنَ الكُفْرِ بَعْدَ الإيمانِ،
And against atheism after belief,
وَمِنَ النِّفاقِ وَالرِّياءِ وَالجِناياتِ،
And against hypocrisy and showing off and felonies,
وَمِنْ شَرِّ الوِسْواسِ الخَنّاسِ،
And against the evil of the whisperings of the slinking Devil,
الَّذي يُوَسْوِسُ في صُدورِ النّاسِ،
Who whispers into the hearts of men;
مِنَ الجِنَّةِ وَالنّاسِ.
From among the jinn and the men.
اللّهُمَّ وَارْزُقْني صِيامَهُ وَقِيامَهُ،
O Allah: and confer upon me with the fasting and the doing of acts of worship during this month,
وَالعَمَلَ فيهِ بِطاعَتِكَ،
And with the doing of acts of obedience to You,
وَطاعَةِ رَسولِكَ وَأُولي الأمْرِ،
And to Your Messenger and the Men in Authority,
عَلَيهِ وَعَلَيهِمُ السَّلامُ،
May peace be upon him and them,
وَما قَرَّبَ مِنْكَ،
And the doing of whatever act that takes me near You,
وَجَنِّبْني مَعاصِيكَ،
And (please) take me away from acts of disobedience to You.
وَارْزُقْني فيهِ التَّوْبَةَ وَالإنابَةَ وَالإجابَةَ.
And confer upon me in this month with repentance, turning to You, and responding to Your instructions.
وَأعِذْني فيهِ مِنَ الغيبَةِ وَالكَسَلِ وَالفَشَلِ،
And protect me in it against backbiting and lethargy and failure.
وَاسْتَجِبْ لي فيهِ الدُّعاءَ،
And respond my prayers in it.
وَأصِحَّ لي فيهِ جِسمي وَعَقْلي
And grant me well-being for my body and my intellect.
وَفَرِّغْني فيهِ لِطاعَتِكَ وَما قَرَّبَ مِنكَ،
And grant me time to do acts of obedience to You as well as acts that take me near You.
يا كَريمُ يا جَوادُ.
O the All-generous; O the All-magnanimous.
يا كَريمُ،
O the All-generous:
صَلِّ عَلى مُحَمَّدٍ وَعَلى أهْلِ بَيْتِ مُحَمَّدٍ
(please) send blessings upon Muhammad and the Household of Muhammad,
عَلَيهِ وَعَلَيهِمُ السَّلامُ،
Peace be upon him and them,
وَكَذالِكَ فَافْعَلْ بِنا
And do all that to us,
يا أرْحَمَ الرّاحِمينَ.
O the most Merciful of all those who show mercy.