The Messenger of Allah (ﷺ) supplicate by saying these:

اَللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ غَلَبَةِ الدَّيْنِ وَغَلَبَةِ الْعَدُوِّ وَشَمَاتَةِ الْأَعْدَاءِ

Allaahumma inni A‛oodhu bika min ghalabatid-daini, wa ghalabatil-'aduwwi, wa shamaatatil-a'daa'i

O Allah, I seek refuge with You from being overwhelmed by debt and from being overpowered by the enemy, and from the enemy rejoicing at my misfortune.

Reference: Sahih. Nasa'i: 5487