попасть под обстрел(если речь идёт об артобстреле: We came under shelling about 3km from the Turkish border. • After destroying a considerable number of barges, sea trucks and luggers were forced to crash dive as we came under shelling by a Jap shore battery.4uzhoj)
неизбирательный обстрел(The Mosul siege, supposed to liberate people from ISIS, poses a grave threat to civilians, while those who manage to flee the indiscriminate shelling are forced through a poorly organized jihadist filtering process, a senior HRW official told RT aldrignedigen)