If I miss the first 2 raka'ts of Maghrib Salaat with Jamaat, how do I complete my Salaat?

Answer

After the Imaam's Salaam, in the first raka't which you will perform, recite Thana, Ta-awwuz, Tasmiyah and a Surah (or some aayaat). The Surah should be longer than the Surah which you will recite in the next raka't, or of more or less equal length. After this one raka't, sit and recite Attahiyaat, then rise to perform the second raka't in which there will be qiraa't.