Related על ברכות 5:3

One who was reading the Shema and made a mistake, and skipped in it one verse, [he] should not begin to read that verse by itself, but rather should go back to that verse and complete [the Shema, from that point on] until the end. And the same [applies] to Hallel, to prayer [of Shemoneh Esreh], and to the Megillah [of Esther]. One who entered a synagogue and found that [the congregation] has read half of it (i.e. the Shema) and [he] completed [the remaining half of the Shema] with them, [he] should not go back and read it (i.e. the Shema) from the beginning until that place, but rather [he] should begin from the beginning and complete it until the end. And the same [applies] to Hallel, to Tefillah (prayer) [of Shemoneh Esreh], and to the Megillah [of Esther].