• تَسْتَغِيثُونَ
• ٱسْتَغَٰثَهُ
• يَسْتَغِيثَانِ
• يَسْتَغِيثُوا۟
• يُغَاثُوا۟

Appears 4 times in the Quran.

1. 8:9 إِذْ تَسْتَغِيثُونَ رَبَّكُمْ فَٱسْتَجَابَ لَكُمْ أَنِّى مُمِدُّكُم بِأَلْفٍ مِّنَ ٱلْمَلَٰٓئِكَةِ مُرْدِفِينَ

   When you sought aid from your Lord, so He answered you: I will assist you with a thousand of the angels following one another.
   

2. 18:29 وَقُلِ ٱلْحَقُّ مِن رَّبِّكُمْ فَمَن شَآءَ فَلْيُؤْمِن وَمَن شَآءَ فَلْيَكْفُرْ إِنَّآ أَعْتَدْنَا لِلظَّٰلِمِينَ نَارًا أَحَاطَ بِهِمْ سُرَادِقُهَا وَإِن يَسْتَغِيثُوا۟ يُغَاثُوا۟ بِمَآءٍ كَٱلْمُهْلِ يَشْوِى ٱلْوُجُوهَ بِئْسَ ٱلشَّرَابُ وَسَآءَتْ مُرْتَفَقًا

   And say: The truth is from your Lord, so let him who please believe, and let him who please disbelieve; surely We have prepared for the iniquitous a fire, the curtains of which shall encompass them about; and if they cry for water, they shall be given water like molten brass which will scald their faces; evil the drink and ill the resting-place.
   

3. 28:15 وَدَخَلَ ٱلْمَدِينَةَ عَلَىٰ حِينِ غَفْلَةٍ مِّنْ أَهْلِهَا فَوَجَدَ فِيهَا رَجُلَيْنِ يَقْتَتِلَانِ هَٰذَا مِن شِيعَتِهِۦ وَهَٰذَا مِنْ عَدُوِّهِۦ فَٱسْتَغَٰثَهُ ٱلَّذِى مِن شِيعَتِهِۦ عَلَى ٱلَّذِى مِنْ عَدُوِّهِۦ فَوَكَزَهُۥ مُوسَىٰ فَقَضَىٰ عَلَيْهِ قَالَ هَٰذَا مِنْ عَمَلِ ٱلشَّيْطَٰنِ إِنَّهُۥ عَدُوٌّ مُّضِلٌّ مُّبِينٌ

   And he went into the city at a time of unvigilance on the part of its people, so he found therein two men fighting, one being of his party and the other of his foes, and he who was of his party cried out to him for help against him who was of his enemies, so Musa struck him with his fist and killed him. He said: This is on account of the Shaitan's doing; surely he is an enemy, openly leading astray.
   

4. 46:17 وَٱلَّذِى قَالَ لِوَٰلِدَيْهِ أُفٍّ لَّكُمَآ أَتَعِدَانِنِىٓ أَنْ أُخْرَجَ وَقَدْ خَلَتِ ٱلْقُرُونُ مِن قَبْلِى وَهُمَا يَسْتَغِيثَانِ ٱللَّهَ وَيْلَكَ ءَامِنْ إِنَّ وَعْدَ ٱللَّهِ حَقٌّ فَيَقُولُ مَا هَٰذَآ إِلَّآ أَسَٰطِيرُ ٱلْأَوَّلِينَ

   And he who says to his parents: Fie on you! do you threaten me that I shall be brought forth when generations have already passed away before me? And they both call for Allah's aid: Woe to you! believe, surely the promise of Allah is true. But he says: This is nothing but stories of the ancients.