Bibi Fatima is the one mentioned in Ayah e Mubahila in Surah Aal e Imran 61:
فَمَنْ حَاجَّكَ فِيهِ مِنْ بَعْدِ مَا جَاءَكَ مِنَ الْعِلْمِ فَقُلْ تَعَالَوْا نَدْعُ أَبْنَاءَنَا وَأَبْنَاءَكُمْ وَنِسَاءَنَا وَنِسَاءَكُمْ وَأَنْفُسَنَا وَأَنْفُسَكُمْ ثُمَّ نَبْتَهِلْ فَنَجْعَلْ لَعْنَتَ اللَّهِ عَلَى الْكَاذِبِينَ
[Yusufali 3:61] If any one disputes in this matter with thee, now after (full) knowledge Hath come to thee, say: “Come! let us gather together,- our sons and your sons, our women and your women, ourselves and yourselves: Then let us earnestly pray, and invoke the curse of Allah on those who lie!”
This is from Tafsir al-Jalalayn:
The Prophet (s) had called upon the Najrān delegation to do this when they disputed with him about Jesus. They said, ‘Let us think about it and we will come back to you’. The judicious one among them said, ‘You know that he is a prophet, and that every people that has ever challenged a prophet to a mutual imprecation has been destroyed’.
They left him and departed. When they went to see the Prophet (s), who had set out with al-Hasan, al-Husayn, Fātima and ‘Alī, he said to them [the Najrān delegation], ‘When I supplicate, you say ‘Amen’; but they refrained from this mutual imprecation and made peace with the Prophet on the condition that they pay the jizya, as reported by Abū Nu‘aym.
According to Ibn ‘Abbās [the Prophet] said, ‘Had they set out and performed the mutual cursing, they would have gone home and found neither possessions nor family’. It is also reported that had they set out with this intention, they would have been consumed by fire.