He who ate seven 'ajwa' dates in the morning, poison and magic will not harm him on that day. (Using translation from Muslim 2047b)
قَالَ رَسُولُ اللهِ ﷺ مَنْ تَصَبَّحَ بِسَبْعِ تَمَرَاتٍ مِنْ عَجْوَةٍ لَمْ يَضُرَّهُ ذَلِكَ الْيَوْمَ سُمٌّ وَلا سِحْرٌ