There’s no exact parallel, but what’s happening in Germany with the AFD looks remarkably similar to Indian politics in the early 1990s: the old order crumbling, a new challenger on the right espousing a form of ethnic nationalism, a desperate attempt by established parties to build a firewall against the threat, the firewall quickly collapsing.
One big difference: A first past the post system like India’s is much friendlier to insurgent parties than a proportional representation system. In a first past the post election, AFD could have easily won a two-thirds majority in Saxony-Anhalt.