He believes he escaped danger through the Buddha's assistance.
加護 also means divine protection, but is more common and less formal than 佑助.
Standard kanji spelling; 佑 carries a sense of divine or heavenly help.
Variant spelling; 祐 also implies divine protection or blessing.
Compound of 佑 (help, divine aid) and 助 (help, assist). The exact historical derivation is uncertain, but the kanji choice emphasizes a spiritual or heavenly dimension of assistance.